Revert "Revert "Change comment style (#67)" (#68)"

This reverts commit 0494a36681.

.pre-commit-config.yaml

@@ -11,7 +11,3 @@ repos:
     rev: 22.12.0
     hooks:
       - id: black
-  - repo: https://github.com/hadialqattan/pycln
-    rev: 'v2.3.0'
-    hooks:
-      - id: pycln

502.html

@@ -49,7 +49,7 @@
         <br>
         <div class="popup">
             <div>
-                <img class="logo" src="logo.svg" alt="LQDOJ">
+                <img class="logo" src="logo.png" alt="LQDOJ">
             </div>
             <h1 style="width: 100%;">Oops, LQDOJ is down now.</h1>
         </div>

README.md

@@ -31,197 +31,6 @@ Support plagiarism detection via [Stanford MOSS](https://theory.stanford.edu/~ai
 Most of the setup are the same as DMOJ installations. You can view the installation guide of DMOJ here: https://docs.dmoj.ca/#/site/installation.
 There is one minor change: Instead of `git clone https://github.com/DMOJ/site.git`, you clone this repo `git clone https://github.com/LQDJudge/online-judge.git`.
 
-
-- Bước 1: cài các thư viện cần thiết
-    - $ ở đây nghĩa là sudo. Ví dụ dòng đầu nghĩa là chạy lệnh `sudo apt update`
-
-```jsx
-$ apt update
-$ apt install git gcc g++ make python3-dev python3-pip libxml2-dev libxslt1-dev zlib1g-dev gettext curl redis-server
-$ curl -sL https://deb.nodesource.com/setup_18.x | sudo -E bash -
-$ apt install nodejs
-$ npm install -g sass postcss-cli postcss autoprefixer
-```
-
-- Bước 2: tạo DB
-    - Server đang dùng MariaDB ≥ 10.5, các bạn cũng có thể dùng Mysql nếu bị conflict
-    - Nếu các bạn chạy lệnh dưới này xong mà version mariadb bị cũ (< 10.5) thì có thể tra google cách cài MariaDB mới nhất (10.5 hoặc 10.6).
-    - Các bạn có thể thấy version MariaDB bằng cách gõ lệnh `sudo mysql` (Ctrl + C để quit)
-
-```jsx
-$ apt update
-$ apt install mariadb-server libmysqlclient-dev
-```
-
-- Bước 3: tạo table trong DB
-    - Các bạn có thể thay tên table và password
-
-```jsx
-$ sudo mysql
-mariadb> CREATE DATABASE dmoj DEFAULT CHARACTER SET utf8mb4 DEFAULT COLLATE utf8mb4_general_ci;
-mariadb> GRANT ALL PRIVILEGES ON dmoj.* TO 'dmoj'@'localhost' IDENTIFIED BY '<password>';
-mariadb> exit
-```
-
-- Bước 4: Cài đặt môi trường ảo (virtual env) và pull code
-    - Nếu `pip3 install mysqlclient` bị lỗi thì thử chạy `pip3 install mysqlclient==2.1.1`
-
-```jsx
-$ python3 -m venv dmojsite
-$ . dmojsite/bin/activate
-
-(dmojsite) $ git clone https://github.com/LQDJudge/online-judge.git
-(dmojsite) $ cd online-judge
-(dmojsite) $ git submodule init
-(dmojsite) $ git submodule update
-(dmojsite) $ pip3 install -r requirements.txt
-(dmojsite) $ pip3 install mysqlclient
-(dmojsite) $ pre-commit install
-```
-
-- Bước 5: tạo local_settings.py. Đây là file để custom setting cho Django. Các bạn tạo file vào `online-judge/dmoj/local_settings.py`
-    - File mẫu: https://github.com/DMOJ/docs/blob/master/sample_files/local_settings.py
-    - Nếu bạn đổi tên hoặc mật khẩu table databases thì thay đổi thông tin tương ứng trong `Databases`
-    - Sau khi xong, chạy lệnh `(dmojsite) $ python3 manage.py check` để kiểm tra
-- Bước 6: Compile CSS và translation
-    - Giải thích:
-        - Lệnh 1 và 2 gọi sau mỗi lần thay đổi 1 file css hoặc file js (file html thì không cần)
-        - Lệnh 3 và 4 gọi sau mỗi lần thay đổi file dịch
-    - Note: Sau khi chạy lệnh này, folder tương ứng với STATIC_ROOT trong local_settings phải được tạo. Nếu chưa được tạo thì mình cần tạo folder đó trước khi chạy 2 lệnh đầu.
-
-```jsx
-(dmojsite) $ ./make_style.sh
-(dmojsite) $ python3 manage.py collectstatic
-(dmojsite) $ python3 manage.py compilemessages
-(dmojsite) $ python3 manage.py compilejsi18n
-```
-
-- Bước 7: Thêm dữ liệu vào DB
-
-```jsx
-(dmojsite) $ python3 manage.py migrate
-(dmojsite) $ python3 manage.py loaddata navbar
-(dmojsite) $ python3 manage.py loaddata language_small
-(dmojsite) $ python3 manage.py loaddata demo
-```
-
-- Bước 8: Chạy site. Đến đây thì cơ bản đã hoàn thành (chưa có judge, websocket, celery). Các bạn có thể truy cập tại `localhost:8000`
-
-```jsx
-python3 manage.py runserver 0.0.0.0:8000
-```
-
-**Một số lưu ý:**
-
-1. (WSL) có thể tải ứng dụng Terminal trong Windows Store
-2. (WSL) mỗi lần mở ubuntu, các bạn cần chạy lệnh sau để mariadb khởi động: `sudo service mysql restart` (tương tự cho một số service khác như memcached, celery)
-3. Sau khi cài đặt, các bạn chỉ cần activate virtual env và chạy lệnh runserver là ok
-```jsx
-. dmojsite/bin/activate
-python3 manage.py runserver
-```
-5. Đối với nginx, sau khi config xong theo guide của DMOJ, bạn cần thêm location như sau để sử dụng được tính năng profile image, thay thế `path/to/oj` thành đường dẫn nơi bạn đã clone source code.
-
-```
-location /profile_images/ {
-    root /path/to/oj;
-}
-```
-
-6. Quy trình dev:
-    1. Sau khi thay đổi code thì django tự build lại, các bạn chỉ cần F5
-    2. Một số style nằm trong các file .scss. Các bạn cần recompile css thì mới thấy được thay đổi.
-
-**Optional:**
-
-************Alias:************ Các bạn có thể lưu các alias này để sau này dùng cho nhanh
-
-- mtrans: để generate translation khi các bạn add một string trong code
-- trans: compile translation (sau khi bạn đã dịch tiếng Việt)
-- cr: chuyển tới folder OJ
-- pr: chạy server
-- sm: restart service (chủ yếu dùng cho WSL)
-- sd: activate virtual env
-- css: compile các file css
-
-```jsx
-alias mtrans='python3 manage.py makemessages -l vi && python3 manage.py makedmojmessages -l vi'
-alias pr='python3 manage.py runserver'
-alias sd='source ~/LQDOJ/dmojsite/bin/activate'
-alias sm='sudo service mysql restart && sudo service redis-server start && sudo service memcached start'
-alias trans='python3 manage.py compilemessages -l vi && python3 manage.py compilejsi18n -l vi'
-alias cr='cd ~/LQDOJ/online-judge'
-alias css='./make_style.sh && python3 manage.py collectstatic --noinput'
-```
-
-**Memcached:** dùng cho in-memory cache
-
-```jsx
-$ sudo apt install memcached
-```
-
-**Websocket:** dùng để live update (như chat)
-
-- Tạo file online-judge/websocket/config.js
-
-```jsx
-module.exports = {
-    get_host: '127.0.0.1',
-    get_port: 15100,
-    post_host: '127.0.0.1',
-    post_port: 15101,
-    http_host: '127.0.0.1',
-    http_port: 15102,
-    long_poll_timeout: 29000,
-};
-```
-
-- Cài các thư viện
-
-```jsx
-(dmojsite) $ npm install qu ws simplesets
-(dmojsite) $ pip3 install websocket-client
-```
-
-- Khởi động (trong 1 tab riêng)
-
-```jsx
-(dmojsite) $ node websocket/daemon.js
-```
-
-**************Celery:************** (dùng cho một số task như batch rejudge_
-
-```jsx
-celery -A dmoj_celery worker
-```
-
-**************Judge:**************
-
-- Cài đặt ở 1 folder riêng bên ngoài site:
-
-```jsx
-$ apt install python3-dev python3-pip build-essential libseccomp-dev
-$ git clone https://github.com/LQDJudge/judge-server.git
-$ cd judge-server
-$ sudo pip3 install -e .
-```
-
-- Tạo một file judge.yml ở bên ngoài folder judge-server (file mẫu https://github.com/DMOJ/docs/blob/master/sample_files/judge_conf.yml)
-- Thêm judge vào site bằng UI: Admin → Judge → Thêm Judge → nhập id và key (chỉ cần thêm 1 lần) hoặc dùng lệnh `(dmojsite) $ python3 managed.py addjudge <id> <key>`.
-- Chạy Bridge (cầu nối giữa judge và site) trong 1 tab riêng trong folder online-judge:
-
-```jsx
-(dmojsite) $ python3 managed.py runbridged
-```
-
-- Khởi động Judge (trong 1 tab riêng):
-
-```jsx
-$ dmoj -c judge.yml localhost
-```
-
-- Lưu ý: mỗi lần sau này muốn chạy judge thì mở 1 tab cho bridge và n tab cho judge. Mỗi judge cần 1 file yml khác nhau (chứa authentication khác nhau)
-
 ### Some frequent difficulties when installation:
 
 1. Missing the `local_settings.py`. You need to copy the `local_settings.py` in order to pass the check.

chat_box/apps.py

@@ -3,6 +3,3 @@ from django.apps import AppConfig
 
 class ChatBoxConfig(AppConfig):
     name = "chat_box"
-
-    def ready(self):
-        from . import models

chat_box/migrations/0013_alter_message_time.py

@@ -1,20 +0,0 @@
-# Generated by Django 3.2.18 on 2023-08-28 01:24
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("chat_box", "0012_auto_20230308_1417"),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name="message",
-            name="time",
-            field=models.DateTimeField(
-                auto_now_add=True, db_index=True, verbose_name="posted time"
-            ),
-        ),
-    ]

chat_box/migrations/0014_userroom_unread_count.py

@@ -1,38 +0,0 @@
-# Generated by Django 3.2.18 on 2023-08-28 06:02
-
-from django.db import migrations, models
-
-
-def migrate(apps, schema_editor):
-    UserRoom = apps.get_model("chat_box", "UserRoom")
-    Message = apps.get_model("chat_box", "Message")
-
-    for ur in UserRoom.objects.all():
-        if not ur.room:
-            continue
-        messages = ur.room.message_set
-        last_msg = messages.first()
-        try:
-            if last_msg and last_msg.author != ur.user:
-                ur.unread_count = messages.filter(time__gte=ur.last_seen).count()
-            else:
-                ur.unread_count = 0
-            ur.save()
-        except:
-            continue
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("chat_box", "0013_alter_message_time"),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name="userroom",
-            name="unread_count",
-            field=models.IntegerField(db_index=True, default=0),
-        ),
-        migrations.RunPython(migrate, migrations.RunPython.noop, atomic=True),
-    ]

chat_box/migrations/0015_room_last_msg_time.py

@@ -1,33 +0,0 @@
-# Generated by Django 3.2.18 on 2023-11-02 01:41
-
-from django.db import migrations, models
-
-
-def migrate(apps, schema_editor):
-    Room = apps.get_model("chat_box", "Room")
-    Message = apps.get_model("chat_box", "Message")
-
-    for room in Room.objects.all():
-        messages = room.message_set
-        last_msg = messages.first()
-        if last_msg:
-            room.last_msg_time = last_msg.time
-            room.save()
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("chat_box", "0014_userroom_unread_count"),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name="room",
-            name="last_msg_time",
-            field=models.DateTimeField(
-                db_index=True, null=True, verbose_name="last seen"
-            ),
-        ),
-        migrations.RunPython(migrate, migrations.RunPython.noop, atomic=True),
-    ]

chat_box/migrations/0016_alter_room_unique_together.py

@@ -1,32 +0,0 @@
-# Generated by Django 3.2.18 on 2024-08-22 03:12
-
-from django.db import migrations, models
-
-
-def remove_duplicates(apps, schema_editor):
-    Room = apps.get_model("chat_box", "Room")
-    seen = set()
-
-    for room in Room.objects.all():
-        pair = (room.user_one_id, room.user_two_id)
-        reverse_pair = (room.user_two_id, room.user_one_id)
-
-        if pair in seen or reverse_pair in seen:
-            room.delete()
-        else:
-            seen.add(pair)
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("chat_box", "0015_room_last_msg_time"),
-    ]
-
-    operations = [
-        migrations.RunPython(remove_duplicates),
-        migrations.AlterUniqueTogether(
-            name="room",
-            unique_together={("user_one", "user_two")},
-        ),
-    ]

chat_box/models.py

@@ -1,11 +1,9 @@
 from django.db import models
-from django.db.models import CASCADE, Q
+from django.db.models import CASCADE
 from django.utils.translation import gettext_lazy as _
-from django.utils.functional import cached_property
 
 
 from judge.models.profile import Profile
-from judge.caching import cache_wrapper
 
 
 __all__ = ["Message", "Room", "UserRoom", "Ignore"]
@@ -18,44 +16,20 @@ class Room(models.Model):
     user_two = models.ForeignKey(
         Profile, related_name="user_two", verbose_name="user 2", on_delete=CASCADE
     )
-    last_msg_time = models.DateTimeField(
-        verbose_name=_("last seen"), null=True, db_index=True
-    )
-
-    class Meta:
-        app_label = "chat_box"
-        unique_together = ("user_one", "user_two")
-
-    @cached_property
-    def _cached_info(self):
-        return get_room_info(self.id)
 
     def contain(self, profile):
-        return profile.id in [self.user_one_id, self.user_two_id]
+        return self.user_one == profile or self.user_two == profile
 
     def other_user(self, profile):
         return self.user_one if profile == self.user_two else self.user_two
 
-    def other_user_id(self, profile):
-        user_ids = [self.user_one_id, self.user_two_id]
-        return sum(user_ids) - profile.id
-
     def users(self):
         return [self.user_one, self.user_two]
 
-    def last_message_body(self):
-        return self._cached_info["last_message"]
-
-    @classmethod
-    def prefetch_room_cache(self, room_ids):
-        get_room_info.prefetch_multi([(i,) for i in room_ids])
-
 
 class Message(models.Model):
     author = models.ForeignKey(Profile, verbose_name=_("user"), on_delete=CASCADE)
-    time = models.DateTimeField(
+    time = models.DateTimeField(verbose_name=_("posted time"), auto_now_add=True)
-        verbose_name=_("posted time"), auto_now_add=True, db_index=True
-    )
     body = models.TextField(verbose_name=_("body of comment"), max_length=8192)
     hidden = models.BooleanField(verbose_name="is hidden", default=False)
     room = models.ForeignKey(
@@ -63,6 +37,7 @@ class Message(models.Model):
     )
 
     def save(self, *args, **kwargs):
+        new_message = self.id
         self.body = self.body.strip()
         super(Message, self).save(*args, **kwargs)
 
@@ -73,7 +48,6 @@ class Message(models.Model):
         indexes = [
             models.Index(fields=["hidden", "room", "-id"]),
         ]
-        app_label = "chat_box"
 
 
 class UserRoom(models.Model):
@@ -82,11 +56,9 @@ class UserRoom(models.Model):
         Room, verbose_name="room id", on_delete=CASCADE, default=None, null=True
     )
     last_seen = models.DateTimeField(verbose_name=_("last seen"), auto_now_add=True)
-    unread_count = models.IntegerField(default=0, db_index=True)
 
     class Meta:
         unique_together = ("user", "room")
-        app_label = "chat_box"
 
 
 class Ignore(models.Model):
@@ -99,15 +71,14 @@ class Ignore(models.Model):
     )
     ignored_users = models.ManyToManyField(Profile)
 
-    class Meta:
-        app_label = "chat_box"
-
     @classmethod
     def is_ignored(self, current_user, new_friend):
         try:
-            return current_user.ignored_chat_users.ignored_users.filter(
+            return (
-                id=new_friend.id
+                current_user.ignored_chat_users.get()
-            ).exists()
+                .ignored_users.filter(id=new_friend.id)
+                .exists()
+            )
         except:
             return False
 
@@ -118,16 +89,6 @@ class Ignore(models.Model):
         except:
             return Profile.objects.none()
 
-    @classmethod
-    def get_ignored_rooms(self, user):
-        try:
-            ignored_users = self.objects.get(user=user).ignored_users.all()
-            return Room.objects.filter(Q(user_one=user) | Q(user_two=user)).filter(
-                Q(user_one__in=ignored_users) | Q(user_two__in=ignored_users)
-            )
-        except:
-            return Room.objects.none()
-
     @classmethod
     def add_ignore(self, current_user, friend):
         ignore, created = self.objects.get_or_create(user=current_user)
@@ -144,11 +105,3 @@ class Ignore(models.Model):
             self.remove_ignore(current_user, friend)
         else:
             self.add_ignore(current_user, friend)
-
-
-@cache_wrapper(prefix="Rinfo")
-def get_room_info(room_id):
-    last_msg = Message.objects.filter(room_id=room_id).first()
-    return {
-        "last_message": last_msg.body if last_msg else None,
-    }

chat_box/utils.py

@@ -1,14 +1,10 @@
 from cryptography.fernet import Fernet
-import hmac
-import hashlib
 
 from django.conf import settings
-from django.db.models import OuterRef, Count, Subquery, IntegerField, Q
+from django.db.models import OuterRef, Count, Subquery, IntegerField
 from django.db.models.functions import Coalesce
 
-from chat_box.models import Ignore, Message, UserRoom, Room
+from chat_box.models import Ignore, Message, UserRoom
-
-from judge.caching import cache_wrapper
 
 secret_key = settings.CHAT_SECRET_KEY
 fernet = Fernet(secret_key)
@@ -28,23 +24,25 @@ def decrypt_url(message_encrypted):
         return None, None
 
 
-def encrypt_channel(channel):
+def get_unread_boxes(profile):
-    return (
+    ignored_users = Ignore.get_ignored_users(profile)
-        hmac.new(
+
-            settings.CHAT_SECRET_KEY.encode(),
+    mess = (
-            channel.encode(),
+        Message.objects.filter(room=OuterRef("room"), time__gte=OuterRef("last_seen"))
-            hashlib.sha512,
+        .exclude(author=profile)
-        ).hexdigest()[:16]
+        .exclude(author__in=ignored_users)
-        + "%s" % channel
+        .order_by()
+        .values("room")
+        .annotate(unread_count=Count("pk"))
+        .values("unread_count")
     )
 
-
-@cache_wrapper(prefix="gub")
-def get_unread_boxes(profile):
-    ignored_rooms = Ignore.get_ignored_rooms(profile)
     unread_boxes = (
-        UserRoom.objects.filter(user=profile, unread_count__gt=0)
+        UserRoom.objects.filter(user=profile, room__isnull=False)
-        .exclude(room__in=ignored_rooms)
+        .annotate(
+            unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
+        )
+        .filter(unread_count__gte=1)
         .count()
     )
 

chat_box/views.py

@@ -21,23 +21,22 @@ from django.db.models import (
     Exists,
     Count,
     IntegerField,
-    F,
-    Max,
 )
 from django.db.models.functions import Coalesce
 from django.utils import timezone
 from django.contrib.auth.decorators import login_required
 from django.urls import reverse
 
+import datetime
 
 from judge import event_poster as event
 from judge.jinja2.gravatar import gravatar
 from judge.models import Friend
 
-from chat_box.models import Message, Profile, Room, UserRoom, Ignore, get_room_info
+from chat_box.models import Message, Profile, Room, UserRoom, Ignore
-from chat_box.utils import encrypt_url, decrypt_url, encrypt_channel, get_unread_boxes
+from chat_box.utils import encrypt_url, decrypt_url
 
-from reversion import revisions
+import json
 
 
 class ChatView(ListView):
@@ -50,8 +49,7 @@ class ChatView(ListView):
         self.room_id = None
         self.room = None
         self.messages = None
-        self.first_page_size = 20  # only for first request
+        self.page_size = 20
-        self.follow_up_page_size = 50
 
     def get_queryset(self):
         return self.messages
@@ -65,12 +63,10 @@ class ChatView(ListView):
 
     def get(self, request, *args, **kwargs):
         request_room = kwargs["room_id"]
-        page_size = self.follow_up_page_size
         try:
             last_id = int(request.GET.get("last_id"))
         except Exception:
             last_id = 1e15
-            page_size = self.first_page_size
         only_messages = request.GET.get("only_messages")
 
         if request_room:
@@ -84,12 +80,11 @@ class ChatView(ListView):
             request_room = None
 
         self.room_id = request_room
-        self.messages = (
+        self.messages = Message.objects.filter(
-            Message.objects.filter(hidden=False, room=self.room_id, id__lt=last_id)
+            hidden=False, room=self.room_id, id__lt=last_id
-            .select_related("author")
+        )[: self.page_size]
-            .only("body", "time", "author__rating", "author__display_rank")[:page_size]
-        )
         if not only_messages:
+            update_last_seen(request, **kwargs)
             return super().get(request, *args, **kwargs)
 
         return render(
@@ -106,14 +101,10 @@ class ChatView(ListView):
 
         context["title"] = self.title
         context["last_msg"] = event.last()
-        context["status_sections"] = get_status_context(self.request.profile)
+        context["status_sections"] = get_status_context(self.request)
         context["room"] = self.room_id
         context["has_next"] = self.has_next()
         context["unread_count_lobby"] = get_unread_count(None, self.request.profile)
-        context["chat_channel"] = encrypt_channel(
-            "chat_" + str(self.request.profile.id)
-        )
-        context["chat_lobby_channel"] = encrypt_channel("chat_lobby")
         if self.room:
             users_room = [self.room.user_one, self.room.user_two]
             users_room.remove(self.request.profile)
@@ -139,15 +130,15 @@ def delete_message(request):
     if request.method == "GET":
         return HttpResponseBadRequest()
 
+    if not request.user.is_staff:
+        return HttpResponseBadRequest()
+
     try:
         messid = int(request.POST.get("message"))
         mess = Message.objects.get(id=messid)
     except:
         return HttpResponseBadRequest()
 
-    if not request.user.is_staff and request.profile != mess.author:
-        return HttpResponseBadRequest()
-
     mess.hidden = True
     mess.save()
 
@@ -169,57 +160,26 @@ def mute_message(request):
     except:
         return HttpResponseBadRequest()
 
-    with revisions.create_revision():
-        revisions.set_comment(_("Mute chat") + ": " + mess.body)
-        revisions.set_user(request.user)
     mess.author.mute = True
     mess.author.save()
-
     Message.objects.filter(room=None, author=mess.author).update(hidden=True)
 
     return JsonResponse(ret)
 
 
-def check_valid_message(request, room):
-    if not room and len(request.POST["body"]) > 200:
-        return False
-
-    if not can_access_room(request, room) or request.profile.mute:
-        return False
-
-    last_msg = Message.objects.filter(room=room).first()
-    if (
-        last_msg
-        and last_msg.author == request.profile
-        and last_msg.body == request.POST["body"].strip()
-    ):
-        return False
-
-    if not room:
-        four_last_msg = Message.objects.filter(room=room).order_by("-id")[:4]
-        if len(four_last_msg) >= 4:
-            same_author = all(msg.author == request.profile for msg in four_last_msg)
-            time_diff = timezone.now() - four_last_msg[3].time
-            if same_author and time_diff.total_seconds() < 300:
-                return False
-
-    return True
-
-
 @login_required
 def post_message(request):
     ret = {"msg": "posted"}
-
     if request.method != "POST":
         return HttpResponseBadRequest()
-    if len(request.POST["body"]) > 5000 or len(request.POST["body"].strip()) == 0:
+    if len(request.POST["body"]) > 5000:
         return HttpResponseBadRequest()
 
     room = None
     if request.POST["room"]:
         room = Room.objects.get(id=request.POST["room"])
 
-    if not check_valid_message(request, room):
+    if not can_access_room(request, room) or request.profile.mute:
         return HttpResponseBadRequest()
 
     new_message = Message(author=request.profile, body=request.POST["body"], room=room)
@@ -227,7 +187,7 @@ def post_message(request):
 
     if not room:
         event.post(
-            encrypt_channel("chat_lobby"),
+            "chat_lobby",
             {
                 "type": "lobby",
                 "author_id": request.profile.id,
@@ -237,13 +197,9 @@ def post_message(request):
             },
         )
     else:
-        get_room_info.dirty(room.id)
-        room.last_msg_time = new_message.time
-        room.save()
-
         for user in room.users():
             event.post(
-                encrypt_channel("chat_" + str(user.id)),
+                "chat_" + str(user.id),
                 {
                     "type": "private",
                     "author_id": request.profile.id,
@@ -252,17 +208,14 @@ def post_message(request):
                     "tmp_id": request.POST.get("tmp_id"),
                 },
             )
-            if user != request.profile:
-                UserRoom.objects.filter(user=user, room=room).update(
-                    unread_count=F("unread_count") + 1
-                )
-                get_unread_boxes.dirty(user)
 
     return JsonResponse(ret)
 
 
 def can_access_room(request, room):
-    return not room or room.contain(request.profile)
+    return (
+        not room or room.user_one == request.profile or room.user_two == request.profile
+    )
 
 
 @login_required
@@ -278,7 +231,7 @@ def chat_message_ajax(request):
     try:
         message = Message.objects.filter(hidden=False).get(id=message_id)
         room = message.room
-        if not can_access_room(request, room):
+        if room and not room.contain(request.profile):
             return HttpResponse("Unauthorized", status=401)
     except Message.DoesNotExist:
         return HttpResponseBadRequest()
@@ -301,35 +254,35 @@ def update_last_seen(request, **kwargs):
         room_id = request.POST.get("room")
     else:
         return HttpResponseBadRequest()
+
     try:
         profile = request.profile
         room = None
         if room_id:
-            room = Room.objects.filter(id=int(room_id)).first()
+            room = Room.objects.get(id=int(room_id))
     except Room.DoesNotExist:
         return HttpResponseBadRequest()
+    except Exception as e:
+        return HttpResponseBadRequest()
 
-    if not can_access_room(request, room):
+    if room and not room.contain(profile):
         return HttpResponseBadRequest()
 
     user_room, _ = UserRoom.objects.get_or_create(user=profile, room=room)
     user_room.last_seen = timezone.now()
-    user_room.unread_count = 0
     user_room.save()
 
-    get_unread_boxes.dirty(profile)
-
     return JsonResponse({"msg": "updated"})
 
 
 def get_online_count():
-    last_5_minutes = timezone.now() - timezone.timedelta(minutes=5)
+    last_two_minutes = timezone.now() - timezone.timedelta(minutes=2)
-    return Profile.objects.filter(last_access__gte=last_5_minutes).count()
+    return Profile.objects.filter(last_access__gte=last_two_minutes).count()
 
 
 def get_user_online_status(user):
     time_diff = timezone.now() - user.last_access
-    is_online = time_diff <= timezone.timedelta(minutes=5)
+    is_online = time_diff <= timezone.timedelta(minutes=2)
     return is_online
 
 
@@ -366,66 +319,47 @@ def user_online_status_ajax(request):
         )
 
 
-def get_online_status(profile, other_profile_ids, rooms=None):
+def get_online_status(request_user, queryset, rooms=None):
-    if not other_profile_ids:
+    if not queryset:
         return None
-    Profile.prefetch_profile_cache(other_profile_ids)
+    last_two_minutes = timezone.now() - timezone.timedelta(minutes=2)
-
-    joined_ids = ",".join([str(id) for id in other_profile_ids])
-    other_profiles = Profile.objects.raw(
-        f"SELECT * from judge_profile where id in ({joined_ids}) order by field(id,{joined_ids})"
-    )
-    last_5_minutes = timezone.now() - timezone.timedelta(minutes=5)
     ret = []
-    if rooms:
-        unread_count = get_unread_count(rooms, profile)
-        count = {}
-        last_msg = {}
-        room_of_user = {}
-        for i in unread_count:
-            room = Room.objects.get(id=i["room"])
-            other_profile = room.other_user(profile)
-            count[other_profile.id] = i["unread_count"]
-        rooms = Room.objects.filter(id__in=rooms)
-        for room in rooms:
-            other_profile_id = room.other_user_id(profile)
-            last_msg[other_profile_id] = room.last_message_body()
-            room_of_user[other_profile_id] = room.id
 
-    for other_profile in other_profiles:
-        is_online = False
-        if other_profile.last_access >= last_5_minutes:
-            is_online = True
-        user_dict = {"user": other_profile, "is_online": is_online}
     if rooms:
-            user_dict.update(
+        unread_count = get_unread_count(rooms, request_user)
-                {
+        count = {}
-                    "unread_count": count.get(other_profile.id),
+        for i in unread_count:
-                    "last_msg": last_msg.get(other_profile.id),
+            count[i["other_user"]] = i["unread_count"]
-                    "room": room_of_user.get(other_profile.id),
+
-                }
+    for user in queryset:
-            )
+        is_online = False
-        user_dict["url"] = encrypt_url(profile.id, other_profile.id)
+        if user.last_access >= last_two_minutes:
+            is_online = True
+        user_dict = {"user": user, "is_online": is_online}
+        if rooms and user.id in count:
+            user_dict["unread_count"] = count[user.id]
+        user_dict["url"] = encrypt_url(request_user.id, user.id)
         ret.append(user_dict)
     return ret
 
 
-def get_status_context(profile, include_ignored=False):
+def get_status_context(request, include_ignored=False):
     if include_ignored:
-        ignored_users = []
+        ignored_users = Profile.objects.none()
         queryset = Profile.objects
     else:
-        ignored_users = list(
+        ignored_users = Ignore.get_ignored_users(request.profile)
-            Ignore.get_ignored_users(profile).values_list("id", flat=True)
-        )
         queryset = Profile.objects.exclude(id__in=ignored_users)
 
-    last_5_minutes = timezone.now() - timezone.timedelta(minutes=5)
+    last_two_minutes = timezone.now() - timezone.timedelta(minutes=2)
     recent_profile = (
-        Room.objects.filter(Q(user_one=profile) | Q(user_two=profile))
+        Room.objects.filter(Q(user_one=request.profile) | Q(user_two=request.profile))
         .annotate(
+            last_msg_time=Subquery(
+                Message.objects.filter(room=OuterRef("pk")).values("time")[:1]
+            ),
             other_user=Case(
-                When(user_one=profile, then="user_two"),
+                When(user_one=request.profile, then="user_two"),
                 default="user_one",
             ),
         )
@@ -435,24 +369,50 @@ def get_status_context(profile, include_ignored=False):
         .values("other_user", "id")[:20]
     )
 
-    recent_profile_ids = [str(i["other_user"]) for i in recent_profile]
+    recent_profile_id = [str(i["other_user"]) for i in recent_profile]
+    joined_id = ",".join(recent_profile_id)
     recent_rooms = [int(i["id"]) for i in recent_profile]
-    Room.prefetch_room_cache(recent_rooms)
+    recent_list = None
-
+    if joined_id:
+        recent_list = Profile.objects.raw(
+            f"SELECT * from judge_profile where id in ({joined_id}) order by field(id,{joined_id})"
+        )
+    friend_list = (
+        Friend.get_friend_profiles(request.profile)
+        .exclude(id__in=recent_profile_id)
+        .exclude(id__in=ignored_users)
+        .order_by("-last_access")
+    )
     admin_list = (
         queryset.filter(display_rank="admin")
-        .exclude(id__in=recent_profile_ids)
+        .exclude(id__in=friend_list)
-        .values_list("id", flat=True)
+        .exclude(id__in=recent_profile_id)
+    )
+    all_user_status = (
+        queryset.filter(display_rank="user", last_access__gte=last_two_minutes)
+        .annotate(is_online=Case(default=True, output_field=BooleanField()))
+        .order_by("-rating")
+        .exclude(id__in=friend_list)
+        .exclude(id__in=admin_list)
+        .exclude(id__in=recent_profile_id)[:30]
     )
 
     return [
         {
-            "title": _("Recent"),
+            "title": "Recent",
-            "user_list": get_online_status(profile, recent_profile_ids, recent_rooms),
+            "user_list": get_online_status(request.profile, recent_list, recent_rooms),
         },
         {
-            "title": _("Admin"),
+            "title": "Following",
-            "user_list": get_online_status(profile, admin_list),
+            "user_list": get_online_status(request.profile, friend_list),
+        },
+        {
+            "title": "Admin",
+            "user_list": get_online_status(request.profile, admin_list),
+        },
+        {
+            "title": "Other",
+            "user_list": get_online_status(request.profile, all_user_status),
         },
     ]
 
@@ -463,7 +423,7 @@ def online_status_ajax(request):
         request,
         "chat/online_status.html",
         {
-            "status_sections": get_status_context(request.profile),
+            "status_sections": get_status_context(request),
             "unread_count_lobby": get_unread_count(None, request.profile),
         },
     )
@@ -487,6 +447,7 @@ def get_or_create_room(request):
         return HttpResponseBadRequest()
 
     request_id, other_id = decrypt_url(decrypted_other_id)
+
     if not other_id or not request_id or request_id != request.profile.id:
         return HttpResponseBadRequest()
 
@@ -507,36 +468,55 @@ def get_or_create_room(request):
             user_room.last_seen = timezone.now()
             user_room.save()
 
-    room_url = reverse("chat", kwargs={"room_id": room.id})
     if request.method == "GET":
-        return JsonResponse(
+        return JsonResponse({"room": room.id, "other_user_id": other_user.id})
-            {
+    return HttpResponseRedirect(reverse("chat", kwargs={"room_id": room.id}))
-                "room": room.id,
-                "other_user_id": other_user.id,
-                "url": room_url,
-            }
-        )
-    return HttpResponseRedirect(room_url)
 
 
 def get_unread_count(rooms, user):
     if rooms:
-        return UserRoom.objects.filter(
+        mess = (
-            user=user, room__in=rooms, unread_count__gt=0
+            Message.objects.filter(
-        ).values("unread_count", "room")
+                room=OuterRef("room"), time__gte=OuterRef("last_seen")
-    else:  # lobby
+            )
-        user_room = UserRoom.objects.filter(user=user, room__isnull=True).first()
-        if not user_room:
-            return 0
-        last_seen = user_room.last_seen
-        res = (
-            Message.objects.filter(room__isnull=True, time__gte=last_seen)
             .exclude(author=user)
-            .exclude(hidden=True)
+            .order_by()
-            .count()
+            .values("room")
+            .annotate(unread_count=Count("pk"))
+            .values("unread_count")
         )
 
-        return res
+        return (
+            UserRoom.objects.filter(user=user, room__in=rooms)
+            .annotate(
+                unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
+                other_user=Case(
+                    When(room__user_one=user, then="room__user_two"),
+                    default="room__user_one",
+                ),
+            )
+            .filter(unread_count__gte=1)
+            .values("other_user", "unread_count")
+        )
+    else:  # lobby
+        mess = (
+            Message.objects.filter(room__isnull=True, time__gte=OuterRef("last_seen"))
+            .exclude(author=user)
+            .order_by()
+            .values("room")
+            .annotate(unread_count=Count("pk"))
+            .values("unread_count")
+        )
+
+        res = (
+            UserRoom.objects.filter(user=user, room__isnull=True)
+            .annotate(
+                unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
+            )
+            .values_list("unread_count", flat=True)
+        )
+
+        return res[0] if len(res) else 0
 
 
 @login_required

django_ace/widgets.py

@@ -66,7 +66,7 @@ class AceWidget(forms.Textarea):
         if self.toolbar:
             toolbar = (
                 '<div style="width: {}" class="django-ace-toolbar">'
-                '<a href="#" class="django-ace-max_min"></a>'
+                '<a href="./" class="django-ace-max_min"></a>'
                 "</div>"
             ).format(self.width)
             html = toolbar + html

dmoj/settings.py

@@ -33,7 +33,6 @@ SITE_ID = 1
 SITE_NAME = "LQDOJ"
 SITE_LONG_NAME = "LQDOJ: Le Quy Don Online Judge"
 SITE_ADMIN_EMAIL = False
-SITE_DOMAIN = "lqdoj.edu.vn"
 
 DMOJ_REQUIRE_STAFF_2FA = True
 
@@ -84,9 +83,6 @@ DMOJ_STATS_SUBMISSION_RESULT_COLORS = {
     "CE": "#42586d",
     "ERR": "#ffa71c",
 }
-DMOJ_PROFILE_IMAGE_ROOT = "profile_images"
-DMOJ_ORGANIZATION_IMAGE_ROOT = "organization_images"
-DMOJ_TEST_FORMATTER_ROOT = "test_formatter"
 
 MARKDOWN_STYLES = {}
 MARKDOWN_DEFAULT_STYLE = {}
@@ -132,10 +128,13 @@ USE_SELENIUM = False
 SELENIUM_CUSTOM_CHROME_PATH = None
 SELENIUM_CHROMEDRIVER_PATH = "chromedriver"
 
+PYGMENT_THEME = "pygment-github.css"
 INLINE_JQUERY = True
 INLINE_FONTAWESOME = True
 JQUERY_JS = "//ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"
-FONTAWESOME_CSS = "//cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css"
+FONTAWESOME_CSS = (
+    "//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"
+)
 DMOJ_CANONICAL = ""
 
 # Application definition
@@ -169,7 +168,7 @@ else:
                 },
                 {
                     "model": "judge.Submission",
-                    "icon": "fa-check-square",
+                    "icon": "fa-check-square-o",
                     "children": [
                         "judge.Language",
                         "judge.Judge",
@@ -220,6 +219,7 @@ else:
     }
 
 INSTALLED_APPS += (
+    "debug_toolbar",
     "django.contrib.admin",
     "judge",
     "django.contrib.auth",
@@ -249,6 +249,7 @@ INSTALLED_APPS += (
 )
 
 MIDDLEWARE = (
+    "debug_toolbar.middleware.DebugToolbarMiddleware",
     "judge.middleware.SlowRequestMiddleware",
     "judge.middleware.ShortCircuitMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
@@ -277,11 +278,8 @@ LANGUAGE_COOKIE_AGE = 8640000
 
 FORM_RENDERER = "django.forms.renderers.TemplatesSetting"
 
-IMPERSONATE = {
+IMPERSONATE_REQUIRE_SUPERUSER = True
-    "REQUIRE_SUPERUSER": True,
+IMPERSONATE_DISABLE_LOGGING = True
-    "DISABLE_LOGGING": True,
-    "ADMIN_DELETE_PERMISSION": True,
-}
 
 ACCOUNT_ACTIVATION_DAYS = 7
 
@@ -325,6 +323,7 @@ TEMPLATES = [
                 "judge.template_context.site",
                 "judge.template_context.site_name",
                 "judge.template_context.misc_config",
+                "judge.template_context.math_setting",
                 "social_django.context_processors.backends",
                 "social_django.context_processors.login_redirect",
             ],
@@ -384,7 +383,6 @@ BRIDGED_JUDGE_ADDRESS = [("localhost", 9999)]
 BRIDGED_JUDGE_PROXIES = None
 BRIDGED_DJANGO_ADDRESS = [("localhost", 9998)]
 BRIDGED_DJANGO_CONNECT = None
-BRIDGED_AUTO_CREATE_JUDGE = False
 
 # Event Server configuration
 EVENT_DAEMON_USE = False
@@ -425,14 +423,19 @@ STATICFILES_DIRS = [
 STATIC_URL = "/static/"
 
 # Define a cache
-CACHES = {}
+CACHES = {
+    "default": {
+        "BACKEND": "django.core.cache.backends.memcached.PyMemcacheCache",
+        "LOCATION": "127.0.0.1:11211",
+    }
+}
 
 # Authentication
 AUTHENTICATION_BACKENDS = (
     "social_core.backends.google.GoogleOAuth2",
     "social_core.backends.facebook.FacebookOAuth2",
     "judge.social_auth.GitHubSecureEmailOAuth2",
-    "judge.authentication.CustomModelBackend",
+    "django.contrib.auth.backends.ModelBackend",
 )
 
 SOCIAL_AUTH_PIPELINE = (
@@ -478,24 +481,16 @@ ML_OUTPUT_PATH = None
 # Use subdomain for organizations
 USE_SUBDOMAIN = False
 
-# Chat
-CHAT_SECRET_KEY = "QUdVFsxk6f5-Hd8g9BXv81xMqvIZFRqMl-KbRzztW-U="
-
-# Nginx
-META_REMOTE_ADDRESS_KEY = "REMOTE_ADDR"
-
-DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
-
-# Chunk upload
-CHUNK_UPLOAD_DIR = "/tmp/chunk_upload_tmp"
-
-# Rate limit
-RL_VOTE = "200/h"
-RL_COMMENT = "30/h"
-
-
 try:
     with open(os.path.join(os.path.dirname(__file__), "local_settings.py")) as f:
         exec(f.read(), globals())
 except IOError:
     pass
+
+DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
+
+INTERNAL_IPS = [
+    # ...
+    "127.0.0.1",
+    # ...
+]

dmoj/urls.py

@@ -1,5 +1,6 @@
 import chat_box.views as chat
 
+from django.urls import include, path
 from django.conf import settings
 from django.conf.urls import include, url
 from django.contrib import admin
@@ -15,6 +16,14 @@ from django.contrib.auth.decorators import login_required
 from django.conf.urls.static import static as url_static
 
 
+from judge.feed import (
+    AtomBlogFeed,
+    AtomCommentFeed,
+    AtomProblemFeed,
+    BlogFeed,
+    CommentFeed,
+    ProblemFeed,
+)
 from judge.forms import CustomAuthenticationForm
 from judge.sitemap import (
     BlogPostSitemap,
@@ -36,8 +45,6 @@ from judge.views import (
     language,
     license,
     mailgun,
-    markdown_editor,
-    test_formatter,
     notification,
     organization,
     preview,
@@ -59,13 +66,7 @@ from judge.views import (
     internal,
     resolver,
     course,
-    email,
-    custom_file_upload,
 )
-from judge import authentication
-
-from judge.views.test_formatter import test_formatter
-
 from judge.views.problem_data import (
     ProblemDataView,
     ProblemSubmissionDiff,
@@ -77,6 +78,7 @@ from judge.views.register import ActivationView, RegistrationView
 from judge.views.select2 import (
     AssigneeSelect2View,
     ChatUserSearchSelect2View,
+    CommentSelect2View,
     ContestSelect2View,
     ContestUserSearchSelect2View,
     OrganizationSelect2View,
@@ -84,7 +86,6 @@ from judge.views.select2 import (
     TicketUserSelect2View,
     UserSearchSelect2View,
     UserSelect2View,
-    ProblemAuthorSearchSelect2View,
 )
 
 admin.autodiscover()
@@ -104,19 +105,19 @@ register_patterns = [
     # confusing 404.
     url(
         r"^activate/(?P<activation_key>\w+)/$",
-        ActivationView.as_view(title=_("Activation key invalid")),
+        ActivationView.as_view(title="Activation key invalid"),
         name="registration_activate",
     ),
     url(
         r"^register/$",
-        RegistrationView.as_view(title=_("Register")),
+        RegistrationView.as_view(title="Register"),
         name="registration_register",
     ),
     url(
         r"^register/complete/$",
         TitledTemplateView.as_view(
             template_name="registration/registration_complete.html",
-            title=_("Registration Completed"),
+            title="Registration Completed",
         ),
         name="registration_complete",
     ),
@@ -124,7 +125,7 @@ register_patterns = [
         r"^register/closed/$",
         TitledTemplateView.as_view(
             template_name="registration/registration_closed.html",
-            title=_("Registration not allowed"),
+            title="Registration not allowed",
         ),
         name="registration_disallowed",
     ),
@@ -141,7 +142,9 @@ register_patterns = [
     url(r"^logout/$", user.UserLogoutView.as_view(), name="auth_logout"),
     url(
         r"^password/change/$",
-        authentication.CustomPasswordChangeView.as_view(),
+        auth_views.PasswordChangeView.as_view(
+            template_name="registration/password_change_form.html",
+        ),
         name="password_change",
     ),
     url(
@@ -181,17 +184,6 @@ register_patterns = [
         ),
         name="password_reset_done",
     ),
-    url(r"^email/change/$", email.email_change_view, name="email_change"),
-    url(
-        r"^email/change/verify/(?P<uidb64>[0-9A-Za-z]+)-(?P<token>.+)/$",
-        email.verify_email_view,
-        name="email_change_verify",
-    ),
-    url(
-        r"^email/change/pending$",
-        email.email_change_pending_view,
-        name="email_change_pending",
-    ),
     url(r"^social/error/$", register.social_auth_error, name="social_auth_error"),
     url(r"^2fa/$", totp.TOTPLoginView.as_view(), name="login_2fa"),
     url(r"^2fa/enable/$", totp.TOTPEnableView.as_view(), name="enable_2fa"),
@@ -215,6 +207,7 @@ def paged_list_view(view, name, **kwargs):
 
 
 urlpatterns = [
+    path('__debug__/', include('debug_toolbar.urls')),
     url("", include("pagedown.urls")),
     url(
         r"^$",
@@ -398,36 +391,10 @@ urlpatterns = [
                     name="submission_status",
                 ),
                 url(r"^/abort$", submission.abort_submission, name="submission_abort"),
+                url(r"^/html$", submission.single_submission),
             ]
         ),
     ),
-    url(
-        r"^test_formatter/",
-        include(
-            [
-                url(
-                    r"^$",
-                    login_required(test_formatter.TestFormatter.as_view()),
-                    name="test_formatter",
-                ),
-                url(
-                    r"^edit_page$",
-                    login_required(test_formatter.EditTestFormatter.as_view()),
-                    name="test_formatter_edit",
-                ),
-                url(
-                    r"^download_page$",
-                    login_required(test_formatter.DownloadTestFormatter.as_view()),
-                    name="test_formatter_download",
-                ),
-            ]
-        ),
-    ),
-    url(
-        r"^markdown_editor/",
-        markdown_editor.MarkdownEditor.as_view(),
-        name="markdown_editor",
-    ),
     url(
         r"^submission_source_file/(?P<filename>(\w|\.)+)",
         submission.SubmissionSourceFileView.as_view(),
@@ -487,7 +454,6 @@ urlpatterns = [
                         reverse("all_user_submissions", args=[user])
                     ),
                 ),
-                url(r"^/toggle_follow/", user.toggle_follow, name="user_toggle_follow"),
                 url(
                     r"^/$",
                     lambda _, user: HttpResponsePermanentRedirect(
@@ -535,58 +501,7 @@ urlpatterns = [
         ),
     ),
     url(r"^contests/", paged_list_view(contests.ContestList, "contest_list")),
-    url(
+    url(r"^course/", paged_list_view(course.CourseList, "course_list")),
-        r"^contests/summary/(?P<key>\w+)/",
-        paged_list_view(contests.ContestsSummaryView, "contests_summary"),
-    ),
-    url(
-        r"^contests/official",
-        paged_list_view(contests.OfficialContestList, "official_contest_list"),
-    ),
-    url(r"^courses/", paged_list_view(course.CourseList, "course_list")),
-    url(
-        r"^course/(?P<slug>[\w-]*)",
-        include(
-            [
-                url(r"^$", course.CourseDetail.as_view(), name="course_detail"),
-                url(
-                    r"^/lesson/(?P<id>\d+)$",
-                    course.CourseLessonDetail.as_view(),
-                    name="course_lesson_detail",
-                ),
-                url(
-                    r"^/edit_lessons$",
-                    course.EditCourseLessonsView.as_view(),
-                    name="edit_course_lessons",
-                ),
-                url(
-                    r"^/grades$",
-                    course.CourseStudentResults.as_view(),
-                    name="course_grades",
-                ),
-                url(
-                    r"^/grades/lesson/(?P<id>\d+)$",
-                    course.CourseStudentResultsLesson.as_view(),
-                    name="course_grades_lesson",
-                ),
-                url(
-                    r"^/add_contest$",
-                    course.AddCourseContest.as_view(),
-                    name="add_course_contest",
-                ),
-                url(
-                    r"^/edit_contest/(?P<contest>\w+)$",
-                    course.EditCourseContest.as_view(),
-                    name="edit_course_contest",
-                ),
-                url(
-                    r"^/contests$",
-                    course.CourseContestList.as_view(),
-                    name="course_contest_list",
-                ),
-            ]
-        ),
-    ),
     url(
         r"^contests/(?P<year>\d+)/(?P<month>\d+)/$",
         contests.ContestCalendar.as_view(),
@@ -629,6 +544,11 @@ urlpatterns = [
                     contests.ContestFinalRanking.as_view(),
                     name="contest_final_ranking",
                 ),
+                url(
+                    r"^/ranking/ajax$",
+                    contests.contest_ranking_ajax,
+                    name="contest_ranking_ajax",
+                ),
                 url(r"^/join$", contests.ContestJoin.as_view(), name="contest_join"),
                 url(r"^/leave$", contests.ContestLeave.as_view(), name="contest_leave"),
                 url(r"^/stats$", contests.ContestStats.as_view(), name="contest_stats"),
@@ -645,13 +565,6 @@ urlpatterns = [
                         "contest_user_submissions_ajax",
                     ),
                 ),
-                url(
-                    r"^/submissions",
-                    paged_list_view(
-                        submission.ContestSubmissions,
-                        "contest_submissions",
-                    ),
-                ),
                 url(
                     r"^/participations$",
                     contests.ContestParticipationList.as_view(),
@@ -917,11 +830,6 @@ urlpatterns = [
                                 AssigneeSelect2View.as_view(),
                                 name="ticket_assignee_select2_ajax",
                             ),
-                            url(
-                                r"^problem_authors$",
-                                ProblemAuthorSearchSelect2View.as_view(),
-                                name="problem_authors_select2_ajax",
-                            ),
                         ]
                     ),
                 ),
@@ -980,6 +888,19 @@ urlpatterns = [
             ]
         ),
     ),
+    url(
+        r"^feed/",
+        include(
+            [
+                url(r"^problems/rss/$", ProblemFeed(), name="problem_rss"),
+                url(r"^problems/atom/$", AtomProblemFeed(), name="problem_atom"),
+                url(r"^comment/rss/$", CommentFeed(), name="comment_rss"),
+                url(r"^comment/atom/$", AtomCommentFeed(), name="comment_atom"),
+                url(r"^blog/rss/$", BlogFeed(), name="blog_rss"),
+                url(r"^blog/atom/$", AtomBlogFeed(), name="blog_atom"),
+            ]
+        ),
+    ),
     url(
         r"^stats/",
         include(
@@ -1080,6 +1001,9 @@ urlpatterns = [
                 url(
                     r"^contest/$", ContestSelect2View.as_view(), name="contest_select2"
                 ),
+                url(
+                    r"^comment/$", CommentSelect2View.as_view(), name="comment_select2"
+                ),
             ]
         ),
     ),
@@ -1155,11 +1079,6 @@ urlpatterns = [
                     internal.InternalProblem.as_view(),
                     name="internal_problem",
                 ),
-                url(
-                    r"^problem_votes$",
-                    internal.get_problem_votes,
-                    name="internal_problem_votes",
-                ),
                 url(
                     r"^request_time$",
                     internal.InternalRequestTime.as_view(),
@@ -1185,7 +1104,8 @@ urlpatterns = [
     ),
     url(
         r"^notifications/",
-        paged_list_view(notification.NotificationList, "notification"),
+        login_required(notification.NotificationList.as_view()),
+        name="notification",
     ),
     url(
         r"^import_users/",
@@ -1215,7 +1135,6 @@ urlpatterns = [
         ),
     ),
     url(r"^resolver/(?P<contest>\w+)", resolver.Resolver.as_view(), name="resolver"),
-    url(r"^upload/$", custom_file_upload.file_upload, name="custom_file_upload"),
 ] + url_static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 
 # if hasattr(settings, "INTERNAL_IPS"):
@@ -1243,7 +1162,6 @@ favicon_paths = [
     "favicon-32x32.png",
     "favicon-16x16.png",
     "android-chrome-192x192.png",
-    "android-chrome-512x512.png",
     "android-chrome-48x48.png",
     "mstile-310x150.png",
     "apple-touch-icon-144x144.png",

judge/admin/__init__.py

@@ -1,14 +1,8 @@
 from django.contrib import admin
 from django.contrib.admin.models import LogEntry
-from django.contrib.auth.models import User
 
 from judge.admin.comments import CommentAdmin
-from judge.admin.contest import (
+from judge.admin.contest import ContestAdmin, ContestParticipationAdmin, ContestTagAdmin
-    ContestAdmin,
-    ContestParticipationAdmin,
-    ContestTagAdmin,
-    ContestsSummaryAdmin,
-)
 from judge.admin.interface import (
     BlogPostAdmin,
     LicenseAdmin,
@@ -17,18 +11,12 @@ from judge.admin.interface import (
 )
 from judge.admin.organization import OrganizationAdmin, OrganizationRequestAdmin
 from judge.admin.problem import ProblemAdmin, ProblemPointsVoteAdmin
-from judge.admin.profile import ProfileAdmin, UserAdmin
+from judge.admin.profile import ProfileAdmin
 from judge.admin.runtime import JudgeAdmin, LanguageAdmin
 from judge.admin.submission import SubmissionAdmin
-from judge.admin.taxon import (
+from judge.admin.taxon import ProblemGroupAdmin, ProblemTypeAdmin
-    ProblemGroupAdmin,
-    ProblemTypeAdmin,
-    OfficialContestCategoryAdmin,
-    OfficialContestLocationAdmin,
-)
 from judge.admin.ticket import TicketAdmin
 from judge.admin.volunteer import VolunteerProblemVoteAdmin
-from judge.admin.course import CourseAdmin
 from judge.models import (
     BlogPost,
     Comment,
@@ -52,9 +40,6 @@ from judge.models import (
     Ticket,
     VolunteerProblemVote,
     Course,
-    ContestsSummary,
-    OfficialContestCategory,
-    OfficialContestLocation,
 )
 
 
@@ -80,9 +65,4 @@ admin.site.register(Profile, ProfileAdmin)
 admin.site.register(Submission, SubmissionAdmin)
 admin.site.register(Ticket, TicketAdmin)
 admin.site.register(VolunteerProblemVote, VolunteerProblemVoteAdmin)
-admin.site.register(Course, CourseAdmin)
+admin.site.register(Course)
-admin.site.unregister(User)
-admin.site.register(User, UserAdmin)
-admin.site.register(ContestsSummary, ContestsSummaryAdmin)
-admin.site.register(OfficialContestCategory, OfficialContestCategoryAdmin)
-admin.site.register(OfficialContestLocation, OfficialContestLocationAdmin)

judge/admin/comments.py

@@ -12,6 +12,7 @@ class CommentForm(ModelForm):
     class Meta:
         widgets = {
             "author": AdminHeavySelect2Widget(data_view="profile_select2"),
+            "parent": AdminHeavySelect2Widget(data_view="comment_select2"),
         }
         if HeavyPreviewAdminPageDownWidget is not None:
             widgets["body"] = HeavyPreviewAdminPageDownWidget(
@@ -38,7 +39,7 @@ class CommentAdmin(VersionAdmin):
     )
     list_display = ["author", "linked_object", "time"]
     search_fields = ["author__user__username", "body"]
-    readonly_fields = ["score", "parent"]
+    readonly_fields = ["score"]
     actions = ["hide_comment", "unhide_comment"]
     list_filter = ["hidden"]
     actions_on_top = True

judge/admin/contest.py

@@ -14,14 +14,7 @@ from reversion.admin import VersionAdmin
 from reversion_compare.admin import CompareVersionAdmin
 
 from django_ace import AceWidget
-from judge.models import (
+from judge.models import Contest, ContestProblem, ContestSubmission, Profile, Rating
-    Contest,
-    ContestProblem,
-    ContestSubmission,
-    Profile,
-    Rating,
-    OfficialContest,
-)
 from judge.ratings import rate_contest
 from judge.widgets import (
     AdminHeavySelect2MultipleWidget,
@@ -31,8 +24,6 @@ from judge.widgets import (
     AdminSelect2Widget,
     HeavyPreviewAdminPageDownWidget,
 )
-from judge.views.contests import recalculate_contest_summary_result
-from judge.utils.contest import maybe_trigger_contest_rescore
 
 
 class AdminHeavySelect2Widget(AdminHeavySelect2Widget):
@@ -80,6 +71,7 @@ class ContestProblemInlineForm(ModelForm):
             "hidden_subtasks": TextInput(attrs={"size": "3"}),
             "points": TextInput(attrs={"size": "1"}),
             "order": TextInput(attrs={"size": "1"}),
+            "output_prefix_override": TextInput(attrs={"size": "1"}),
         }
 
 
@@ -94,7 +86,7 @@ class ContestProblemInline(admin.TabularInline):
         "is_pretested",
         "max_submissions",
         "hidden_subtasks",
-        "show_testcases",
+        "output_prefix_override",
         "order",
         "rejudge_column",
     )
@@ -157,26 +149,6 @@ class ContestForm(ModelForm):
             )
 
 
-class OfficialContestInlineForm(ModelForm):
-    class Meta:
-        widgets = {
-            "category": AdminSelect2Widget,
-            "location": AdminSelect2Widget,
-        }
-
-
-class OfficialContestInline(admin.StackedInline):
-    fields = (
-        "category",
-        "year",
-        "location",
-    )
-    model = OfficialContest
-    can_delete = True
-    form = OfficialContestInlineForm
-    extra = 0
-
-
 class ContestAdmin(CompareVersionAdmin):
     fieldsets = (
         (None, {"fields": ("key", "name", "authors", "curators", "testers")}),
@@ -187,11 +159,9 @@ class ContestAdmin(CompareVersionAdmin):
                     "is_visible",
                     "use_clarifications",
                     "hide_problem_tags",
-                    "public_scoreboard",
                     "scoreboard_visibility",
                     "run_pretests_only",
                     "points_precision",
-                    "rate_limit",
                 )
             },
         ),
@@ -251,7 +221,7 @@ class ContestAdmin(CompareVersionAdmin):
         "user_count",
     )
     search_fields = ("key", "name")
-    inlines = [ContestProblemInline, OfficialContestInline]
+    inlines = [ContestProblemInline]
     actions_on_top = True
     actions_on_bottom = True
     form = ContestForm
@@ -311,14 +281,31 @@ class ContestAdmin(CompareVersionAdmin):
 
         super().save_model(request, obj, form, change)
 
+        # We need this flag because `save_related` deals with the inlines, but does not know if we have already rescored
+        self._rescored = False
+        if form.changed_data and any(
+            f in form.changed_data
+            for f in (
+                "start_time",
+                "end_time",
+                "time_limit",
+                "format_config",
+                "format_name",
+                "freeze_after",
+            )
+        ):
+            self._rescore(obj.key)
+            self._rescored = True
+
     def save_related(self, request, form, formsets, change):
         super().save_related(request, form, formsets, change)
         # Only rescored if we did not already do so in `save_model`
-        formset_changed = False
+        if not self._rescored and any(formset.has_changed() for formset in formsets):
-        if any(formset.has_changed() for formset in formsets):
+            self._rescore(form.cleaned_data["key"])
-            formset_changed = True
+        obj = form.instance
-
+        obj.is_organization_private = obj.organizations.count() > 0
-        maybe_trigger_contest_rescore(form, form.instance, formset_changed)
+        obj.is_private = obj.private_contestants.count() > 0
+        obj.save()
 
     def has_change_permission(self, request, obj=None):
         if not request.user.has_perm("judge.edit_own_contest"):
@@ -327,6 +314,11 @@ class ContestAdmin(CompareVersionAdmin):
             return True
         return obj.is_editable_by(request.user)
 
+    def _rescore(self, contest_key):
+        from judge.tasks import rescore_contest
+
+        transaction.on_commit(rescore_contest.s(contest_key).delay)
+
     def make_visible(self, request, queryset):
         if not request.user.has_perm("judge.change_contest_visibility"):
             queryset = queryset.filter(
@@ -510,25 +502,3 @@ class ContestParticipationAdmin(admin.ModelAdmin):
 
     show_virtual.short_description = _("virtual")
     show_virtual.admin_order_field = "virtual"
-
-
-class ContestsSummaryForm(ModelForm):
-    class Meta:
-        widgets = {
-            "contests": AdminHeavySelect2MultipleWidget(
-                data_view="contest_select2", attrs={"style": "width: 100%"}
-            ),
-        }
-
-
-class ContestsSummaryAdmin(admin.ModelAdmin):
-    fields = ("key", "contests", "scores")
-    list_display = ("key",)
-    search_fields = ("key", "contests__key")
-    form = ContestsSummaryForm
-
-    def save_model(self, request, obj, form, change):
-        super(ContestsSummaryAdmin, self).save_model(request, obj, form, change)
-        obj.refresh_from_db()
-        obj.results = recalculate_contest_summary_result(request, obj)
-        obj.save()

judge/admin/course.py

@@ -1,52 +0,0 @@
-from django.contrib import admin
-from django.utils.html import format_html
-from django.urls import reverse, reverse_lazy
-from django.utils.translation import gettext, gettext_lazy as _, ungettext
-from django.forms import ModelForm
-
-from judge.models import Course, CourseRole
-from judge.widgets import AdminSelect2MultipleWidget
-from judge.widgets import (
-    AdminHeavySelect2MultipleWidget,
-    AdminHeavySelect2Widget,
-    HeavyPreviewAdminPageDownWidget,
-    AdminSelect2Widget,
-)
-
-
-class CourseRoleInlineForm(ModelForm):
-    class Meta:
-        widgets = {
-            "user": AdminHeavySelect2Widget(
-                data_view="profile_select2", attrs={"style": "width: 100%"}
-            ),
-            "role": AdminSelect2Widget,
-        }
-
-
-class CourseRoleInline(admin.TabularInline):
-    model = CourseRole
-    extra = 1
-    form = CourseRoleInlineForm
-
-
-class CourseForm(ModelForm):
-    class Meta:
-        widgets = {
-            "organizations": AdminHeavySelect2MultipleWidget(
-                data_view="organization_select2"
-            ),
-            "about": HeavyPreviewAdminPageDownWidget(
-                preview=reverse_lazy("blog_preview")
-            ),
-        }
-
-
-class CourseAdmin(admin.ModelAdmin):
-    prepopulated_fields = {"slug": ("name",)}
-    inlines = [
-        CourseRoleInline,
-    ]
-    list_display = ("name", "is_public", "is_open")
-    search_fields = ("name",)
-    form = CourseForm

judge/admin/interface.py

@@ -53,7 +53,6 @@ class NavigationBarAdmin(DraggableMPTTAdmin):
 class BlogPostForm(ModelForm):
     def __init__(self, *args, **kwargs):
         super(BlogPostForm, self).__init__(*args, **kwargs)
-        if "authors" in self.fields:
         self.fields["authors"].widget.can_add_related = False
 
     class Meta:

judge/admin/organization.py

@@ -33,6 +33,7 @@ class OrganizationAdmin(VersionAdmin):
         "short_name",
         "is_open",
         "about",
+        "logo_override_image",
         "slots",
         "registrant",
         "creation_date",

judge/admin/problem.py

@@ -1,8 +1,8 @@
 from operator import attrgetter
 
 from django import forms
-from django.contrib import admin, messages
+from django.contrib import admin
-from django.db import transaction, IntegrityError
+from django.db import transaction
 from django.db.models import Q, Avg, Count
 from django.db.models.aggregates import StdDev
 from django.forms import ModelForm, TextInput
@@ -11,7 +11,6 @@ from django.utils.html import format_html
 from django.utils.translation import gettext, gettext_lazy as _, ungettext
 from django_ace import AceWidget
 from django.utils import timezone
-from django.core.exceptions import ValidationError
 
 from reversion.admin import VersionAdmin
 from reversion_compare.admin import CompareVersionAdmin
@@ -26,7 +25,6 @@ from judge.models import (
     Solution,
     Notification,
 )
-from judge.models.notification import make_notification
 from judge.widgets import (
     AdminHeavySelect2MultipleWidget,
     AdminSelect2MultipleWidget,
@@ -34,7 +32,6 @@ from judge.widgets import (
     CheckboxSelectMultipleWithSelectAll,
     HeavyPreviewAdminPageDownWidget,
 )
-from judge.utils.problems import user_editable_ids, user_tester_ids
 
 MEMORY_UNITS = (("KB", "KB"), ("MB", "MB"))
 
@@ -57,16 +54,6 @@ class ProblemForm(ModelForm):
             }
         )
 
-    def clean_code(self):
-        code = self.cleaned_data.get("code")
-        if self.instance.pk:
-            return code
-
-        if Problem.objects.filter(code=code).exists():
-            raise ValidationError(_("A problem with this code already exists."))
-
-        return code
-
     def clean(self):
         memory_unit = self.cleaned_data.get("memory_unit", "KB")
         if memory_unit == "MB":
@@ -142,7 +129,6 @@ class LanguageLimitInline(admin.TabularInline):
     model = LanguageLimit
     fields = ("language", "time_limit", "memory_limit", "memory_unit")
     form = LanguageLimitInlineForm
-    extra = 0
 
 
 class LanguageTemplateInlineForm(ModelForm):
@@ -157,7 +143,6 @@ class LanguageTemplateInline(admin.TabularInline):
     model = LanguageTemplate
     fields = ("language", "source")
     form = LanguageTemplateInlineForm
-    extra = 0
 
 
 class ProblemSolutionForm(ModelForm):
@@ -373,29 +358,12 @@ class ProblemAdmin(CompareVersionAdmin):
             self._rescore(request, obj.id)
 
     def save_related(self, request, form, formsets, change):
-        editors = set()
-        testers = set()
-        if "curators" in form.changed_data or "authors" in form.changed_data:
-            editors = set(form.instance.editor_ids)
-        if "testers" in form.changed_data:
-            testers = set(form.instance.tester_ids)
-
         super().save_related(request, form, formsets, change)
+        # Only rescored if we did not already do so in `save_model`
         obj = form.instance
         obj.curators.add(request.profile)
-
+        obj.is_organization_private = obj.organizations.count() > 0
-        if "curators" in form.changed_data or "authors" in form.changed_data:
+        obj.save()
-            del obj.editor_ids
-            editors = editors.union(set(obj.editor_ids))
-        if "testers" in form.changed_data:
-            del obj.tester_ids
-            testers = testers.union(set(obj.tester_ids))
-
-        for editor in editors:
-            user_editable_ids.dirty(editor)
-        for tester in testers:
-            user_tester_ids.dirty(tester)
-
         # Create notification
         if "is_public" in form.changed_data or "organizations" in form.changed_data:
             users = set(obj.authors.all())
@@ -413,7 +381,14 @@ class ProblemAdmin(CompareVersionAdmin):
             category = "Problem public: " + str(obj.is_public)
             if orgs:
                 category += " (" + ", ".join(orgs) + ")"
-            make_notification(users, category, html, request.profile)
+            for user in users:
+                notification = Notification(
+                    owner=user,
+                    html_link=html,
+                    category=category,
+                    author=request.profile,
+                )
+                notification.save()
 
     def construct_change_message(self, request, form, *args, **kwargs):
         if form.cleaned_data.get("change_message"):

judge/admin/profile.py

@@ -1,19 +1,12 @@
 from django.contrib import admin
-from django.forms import ModelForm, CharField, TextInput
+from django.forms import ModelForm
 from django.utils.html import format_html
 from django.utils.translation import gettext, gettext_lazy as _, ungettext
-from django.contrib.auth.admin import UserAdmin as OldUserAdmin
-from django.core.exceptions import ValidationError
-from django.contrib.auth.forms import UserChangeForm
-
-from django_ace import AceWidget
-
-from judge.models import Profile, ProfileInfo
-from judge.widgets import AdminPagedownWidget, AdminSelect2Widget
-
 from reversion.admin import VersionAdmin
 
-import re
+from django_ace import AceWidget
+from judge.models import Profile
+from judge.widgets import AdminPagedownWidget, AdminSelect2Widget
 
 
 class ProfileForm(ModelForm):
@@ -60,13 +53,6 @@ class TimezoneFilter(admin.SimpleListFilter):
         return queryset.filter(timezone=self.value())
 
 
-class ProfileInfoInline(admin.StackedInline):
-    model = ProfileInfo
-    can_delete = False
-    verbose_name_plural = "profile info"
-    fk_name = "profile"
-
-
 class ProfileAdmin(VersionAdmin):
     fields = (
         "user",
@@ -76,12 +62,15 @@ class ProfileAdmin(VersionAdmin):
         "timezone",
         "language",
         "ace_theme",
+        "math_engine",
         "last_access",
         "ip",
         "mute",
         "is_unlisted",
+        "is_banned_problem_voting",
         "notes",
         "is_totp_enabled",
+        "user_script",
         "current_contest",
     )
     readonly_fields = ("user",)
@@ -102,7 +91,6 @@ class ProfileAdmin(VersionAdmin):
     actions_on_top = True
     actions_on_bottom = True
     form = ProfileForm
-    inlines = (ProfileInfoInline,)
 
     def get_queryset(self, request):
         return super(ProfileAdmin, self).get_queryset(request).select_related("user")
@@ -137,7 +125,7 @@ class ProfileAdmin(VersionAdmin):
     admin_user_admin.short_description = _("User")
 
     def email(self, obj):
-        return obj.email
+        return obj.user.email
 
     email.admin_order_field = "user__email"
     email.short_description = _("Email")
@@ -171,57 +159,11 @@ class ProfileAdmin(VersionAdmin):
 
     recalculate_points.short_description = _("Recalculate scores")
 
-
+    def get_form(self, request, obj=None, **kwargs):
-class UserForm(UserChangeForm):
+        form = super(ProfileAdmin, self).get_form(request, obj, **kwargs)
-    def __init__(self, *args, **kwargs):
+        if "user_script" in form.base_fields:
-        super().__init__(*args, **kwargs)
+            # form.base_fields['user_script'] does not exist when the user has only view permission on the model.
-        self.fields["username"].help_text = _(
+            form.base_fields["user_script"].widget = AceWidget(
-            "Username can only contain letters, digits, and underscores."
+                "javascript", request.profile.ace_theme
             )
-
+        return form
-    def clean_username(self):
-        username = self.cleaned_data.get("username")
-        if not re.match(r"^\w+$", username):
-            raise ValidationError(
-                _("Username can only contain letters, digits, and underscores.")
-            )
-        return username
-
-
-class UserAdmin(OldUserAdmin):
-    # Customize the fieldsets for adding and editing users
-    form = UserForm
-    fieldsets = (
-        (None, {"fields": ("username", "password")}),
-        ("Personal Info", {"fields": ("first_name", "last_name", "email")}),
-        (
-            "Permissions",
-            {
-                "fields": (
-                    "is_active",
-                    "is_staff",
-                    "is_superuser",
-                    "groups",
-                    "user_permissions",
-                )
-            },
-        ),
-        ("Important dates", {"fields": ("last_login", "date_joined")}),
-    )
-
-    readonly_fields = ("last_login", "date_joined")
-
-    def get_readonly_fields(self, request, obj=None):
-        fields = self.readonly_fields
-        if not request.user.is_superuser:
-            fields += (
-                "is_staff",
-                "is_active",
-                "is_superuser",
-                "groups",
-                "user_permissions",
-            )
-        return fields
-
-    def has_add_permission(self, request):
-        return False

judge/admin/submission.py

@@ -194,6 +194,13 @@ class SubmissionAdmin(admin.ModelAdmin):
     def has_add_permission(self, request):
         return False
 
+    def has_change_permission(self, request, obj=None):
+        if not request.user.has_perm("judge.edit_own_problem"):
+            return False
+        if request.user.has_perm("judge.edit_all_problem") or obj is None:
+            return True
+        return obj.problem.is_editor(request.profile)
+
     def lookup_allowed(self, key, value):
         return super(SubmissionAdmin, self).lookup_allowed(key, value) or key in (
             "problem__code",

judge/admin/taxon.py

@@ -56,11 +56,3 @@ class ProblemTypeAdmin(admin.ModelAdmin):
             [o.pk for o in obj.problem_set.all()] if obj else []
         )
         return super(ProblemTypeAdmin, self).get_form(request, obj, **kwargs)
-
-
-class OfficialContestCategoryAdmin(admin.ModelAdmin):
-    fields = ("name",)
-
-
-class OfficialContestLocationAdmin(admin.ModelAdmin):
-    fields = ("name",)

judge/apps.py

@@ -12,7 +12,7 @@ class JudgeAppConfig(AppConfig):
         #          OPERATIONS MAY HAVE SIDE EFFECTS.
         #          DO NOT REMOVE THINKING THE IMPORT IS UNUSED.
         # noinspection PyUnresolvedReferences
-        from . import models, signals, jinja2  # noqa: F401, imported for side effects
+        from . import signals, jinja2  # noqa: F401, imported for side effects
 
         from django.contrib.flatpages.models import FlatPage
         from django.contrib.flatpages.admin import FlatPageAdmin

judge/authentication.py

@@ -1,48 +0,0 @@
-from django.contrib.auth.backends import ModelBackend
-from django.contrib.auth.models import User
-from django.contrib.auth.forms import PasswordChangeForm
-from django.contrib.auth.views import PasswordChangeView
-from django.urls import reverse_lazy
-from django.utils.translation import gettext_lazy as _
-
-
-class CustomModelBackend(ModelBackend):
-    def authenticate(self, request, username=None, password=None, **kwargs):
-        try:
-            # Check if the username is an email
-            user = User.objects.get(username=username)
-        except User.DoesNotExist:
-            # If the username is not an email, try authenticating with the username field
-            user = User.objects.filter(email=username).first()
-
-        if user and user.check_password(password):
-            return user
-
-
-class CustomPasswordChangeForm(PasswordChangeForm):
-    def __init__(self, *args, **kwargs):
-        super(CustomPasswordChangeForm, self).__init__(*args, **kwargs)
-        if not self.user.has_usable_password():
-            self.fields.pop("old_password")
-
-    def clean_old_password(self):
-        if "old_password" not in self.cleaned_data:
-            return
-        return super(CustomPasswordChangeForm, self).clean_old_password()
-
-    def clean(self):
-        cleaned_data = super(CustomPasswordChangeForm, self).clean()
-        if "old_password" not in self.cleaned_data and not self.errors:
-            cleaned_data["old_password"] = ""
-        return cleaned_data
-
-
-class CustomPasswordChangeView(PasswordChangeView):
-    form_class = CustomPasswordChangeForm
-    success_url = reverse_lazy("password_change_done")
-    template_name = "registration/password_change_form.html"
-
-    def get_form_kwargs(self):
-        kwargs = super(CustomPasswordChangeView, self).get_form_kwargs()
-        kwargs["user"] = self.request.user
-        return kwargs

judge/bridge/judge_handler.py

@@ -3,6 +3,7 @@ import json
 import logging
 import threading
 import time
+import os
 from collections import deque, namedtuple
 from operator import itemgetter
 
@@ -24,8 +25,6 @@ from judge.models import (
     Submission,
     SubmissionTestCase,
 )
-from judge.bridge.utils import VanishedSubmission
-from judge.caching import cache_wrapper
 
 logger = logging.getLogger("judge.bridge")
 json_log = logging.getLogger("judge.json.bridge")
@@ -65,10 +64,10 @@ class JudgeHandler(ZlibPacketHandler):
             "handshake": self.on_handshake,
         }
         self._working = False
-        self._working_data = {}
         self._no_response_job = None
+        self._problems = []
         self.executors = {}
-        self.problems = set()
+        self.problems = {}
         self.latency = None
         self.time_delta = None
         self.load = 1e100
@@ -94,6 +93,12 @@ class JudgeHandler(ZlibPacketHandler):
 
     def on_disconnect(self):
         self._stop_ping.set()
+        if self._working:
+            logger.error(
+                "Judge %s disconnected while handling submission %s",
+                self.name,
+                self._working,
+            )
         self.judges.remove(self)
         if self.name is not None:
             self._disconnected()
@@ -105,29 +110,21 @@ class JudgeHandler(ZlibPacketHandler):
             self._make_json_log(action="disconnect", info="judge disconnected")
         )
         if self._working:
-            self.judges.judge(
+            Submission.objects.filter(id=self._working).update(
-                self._working,
+                status="IE", result="IE", error=""
-                self._working_data["problem"],
+            )
-                self._working_data["language"],
+            json_log.error(
-                self._working_data["source"],
+                self._make_json_log(
-                None,
+                    sub=self._working,
-                0,
+                    action="close",
+                    info="IE due to shutdown on grading",
+                )
             )
 
     def _authenticate(self, id, key):
         try:
-            judge = Judge.objects.get(name=id)
+            judge = Judge.objects.get(name=id, is_blocked=False)
         except Judge.DoesNotExist:
-            if settings.BRIDGED_AUTO_CREATE_JUDGE:
-                judge = Judge()
-                judge.name = id
-                judge.auth_key = key
-                judge.save()
-                result = True
-            else:
-                result = False
-        else:
-            if judge.is_blocked:
             result = False
         else:
             result = hmac.compare_digest(judge.auth_key, key)
@@ -140,52 +137,11 @@ class JudgeHandler(ZlibPacketHandler):
             )
         return result
 
-    def _update_supported_problems(self, problem_packet):
-        # problem_packet is a dict {code: mtimes} from judge-server
-        self.problems = set(p for p, _ in problem_packet)
-
-    def _update_judge_problems(self):
-        chunk_size = 500
-
-        target_problem_codes = self.problems
-        current_problems = _get_judge_problems(self.judge)
-
-        updated = False
-        problems_to_add = list(target_problem_codes - current_problems)
-        problems_to_remove = list(current_problems - target_problem_codes)
-
-        if problems_to_add:
-            for i in range(0, len(problems_to_add), chunk_size):
-                chunk = problems_to_add[i : i + chunk_size]
-                problem_ids = Problem.objects.filter(code__in=chunk).values_list(
-                    "id", flat=True
-                )
-                if not problem_ids:
-                    continue
-                logger.info("%s: Add %d problems", self.name, len(problem_ids))
-                self.judge.problems.add(*problem_ids)
-                updated = True
-
-        if problems_to_remove:
-            for i in range(0, len(problems_to_remove), chunk_size):
-                chunk = problems_to_remove[i : i + chunk_size]
-                problem_ids = Problem.objects.filter(code__in=chunk).values_list(
-                    "id", flat=True
-                )
-                if not problem_ids:
-                    continue
-                logger.info("%s: Remove %d problems", self.name, len(problem_ids))
-                self.judge.problems.remove(*problem_ids)
-                updated = True
-
-        if updated:
-            _get_judge_problems.dirty(self.judge)
-
     def _connected(self):
         judge = self.judge = Judge.objects.get(name=self.name)
         judge.start_time = timezone.now()
         judge.online = True
-        self._update_judge_problems()
+        judge.problems.set(Problem.objects.filter(code__in=list(self.problems.keys())))
         judge.runtimes.set(Language.objects.filter(key__in=list(self.executors.keys())))
 
         # Delete now in case we somehow crashed and left some over from the last connection
@@ -220,8 +176,6 @@ class JudgeHandler(ZlibPacketHandler):
     def _disconnected(self):
         Judge.objects.filter(id=self.judge.id).update(online=False)
         RuntimeVersion.objects.filter(judge=self.judge).delete()
-        self.judge.problems.clear()
-        _get_judge_problems.dirty(self.judge)
 
     def _update_ping(self):
         try:
@@ -252,7 +206,8 @@ class JudgeHandler(ZlibPacketHandler):
             return
 
         self.timeout = 60
-        self._update_supported_problems(packet["problems"])
+        self._problems = packet["problems"]
+        self.problems = dict(self._problems)
         self.executors = packet["executors"]
         self.name = packet["id"]
 
@@ -353,15 +308,7 @@ class JudgeHandler(ZlibPacketHandler):
 
     def submit(self, id, problem, language, source):
         data = self.get_related_submission_data(id)
-        if not data:
-            self._update_internal_error_submission(id, "Submission vanished")
-            raise VanishedSubmission()
         self._working = id
-        self._working_data = {
-            "problem": problem,
-            "language": language,
-            "source": source,
-        }
         self._no_response_job = threading.Timer(20, self._kill_if_no_response)
         self.send(
             {
@@ -480,12 +427,14 @@ class JudgeHandler(ZlibPacketHandler):
 
     def on_supported_problems(self, packet):
         logger.info("%s: Updated problem list", self.name)
-        self._update_supported_problems(packet["problems"])
+        self._problems = packet["problems"]
-
+        self.problems = dict(self._problems)
         if not self.working:
             self.judges.update_problems(self)
 
-        self._update_judge_problems()
+        self.judge.problems.set(
+            Problem.objects.filter(code__in=list(self.problems.keys()))
+        )
         json_log.info(
             self._make_json_log(action="update-problems", count=len(self.problems))
         )
@@ -702,11 +651,8 @@ class JudgeHandler(ZlibPacketHandler):
         self._free_self(packet)
 
         id = packet["submission-id"]
-        self._update_internal_error_submission(id, packet["message"])
-
-    def _update_internal_error_submission(self, id, message):
         if Submission.objects.filter(id=id).update(
-            status="IE", result="IE", error=message
+            status="IE", result="IE", error=packet["message"]
         ):
             event.post(
                 "sub_%s" % Submission.get_id_secret(id), {"type": "internal-error"}
@@ -714,9 +660,9 @@ class JudgeHandler(ZlibPacketHandler):
             self._post_update_submission(id, "internal-error", done=True)
             json_log.info(
                 self._make_json_log(
-                    sub=id,
+                    packet,
                     action="internal-error",
-                    message=message,
+                    message=packet["message"],
                     finish=True,
                     result="IE",
                 )
@@ -725,10 +671,10 @@ class JudgeHandler(ZlibPacketHandler):
             logger.warning("Unknown submission: %s", id)
             json_log.error(
                 self._make_json_log(
-                    sub=id,
+                    packet,
                     action="internal-error",
                     info="unknown submission",
-                    message=message,
+                    message=packet["message"],
                     finish=True,
                     result="IE",
                 )
@@ -959,8 +905,3 @@ class JudgeHandler(ZlibPacketHandler):
 
     def on_cleanup(self):
         db.connection.close()
-
-
-@cache_wrapper(prefix="gjp", timeout=3600)
-def _get_judge_problems(judge):
-    return set(judge.problems.values_list("code", flat=True))

judge/bridge/judge_list.py

@@ -3,8 +3,6 @@ from collections import namedtuple
 from operator import attrgetter
 from threading import RLock
 
-from judge.bridge.utils import VanishedSubmission
-
 try:
     from llist import dllist
 except ImportError:
@@ -41,8 +39,6 @@ class JudgeList(object):
                         )
                         try:
                             judge.submit(id, problem, language, source)
-                        except VanishedSubmission:
-                            pass
                         except Exception:
                             logger.exception(
                                 "Failed to dispatch %d (%s, %s) to %s",
@@ -93,7 +89,6 @@ class JudgeList(object):
             logger.info("Judge available after grading %d: %s", submission, judge.name)
             del self.submission_map[submission]
             judge._working = False
-            judge._working_data = {}
             self._handle_free_judge(judge)
 
     def abort(self, submission):

judge/bridge/utils.py

@@ -1,2 +0,0 @@
-class VanishedSubmission(Exception):
-    pass

judge/caching.py

@@ -1,16 +1,13 @@
 from inspect import signature
-from django.core.cache import cache, caches
+from django.core.cache import cache
 from django.db.models.query import QuerySet
-from django.core.handlers.wsgi import WSGIRequest
 
 import hashlib
 
-from judge.logging import log_debug
+MAX_NUM_CHAR = 15
-
-MAX_NUM_CHAR = 50
-NONE_RESULT = "__None__"
 
 
+def cache_wrapper(prefix, timeout=86400):
     def arg_to_str(arg):
         if hasattr(arg, "id"):
             return str(arg.id)
@@ -20,97 +17,31 @@ def arg_to_str(arg):
             return str(arg)[:MAX_NUM_CHAR]
         return str(arg)
 
-
-def filter_args(args_list):
-    return [x for x in args_list if not isinstance(x, WSGIRequest)]
-
-
-l0_cache = caches["l0"] if "l0" in caches else None
-
-
-def cache_wrapper(prefix, timeout=None, expected_type=None):
     def get_key(func, *args, **kwargs):
         args_list = list(args)
         signature_args = list(signature(func).parameters.keys())
         args_list += [kwargs.get(k) for k in signature_args[len(args) :]]
-        args_list = filter_args(args_list)
         args_list = [arg_to_str(i) for i in args_list]
         key = prefix + ":" + ":".join(args_list)
         key = key.replace(" ", "_")
         return key
 
-    def _get(key):
-        if not l0_cache:
-            return cache.get(key)
-        result = l0_cache.get(key)
-        if result is None:
-            result = cache.get(key)
-        return result
-
-    def _set_l0(key, value):
-        if l0_cache:
-            l0_cache.set(key, value, 30)
-
-    def _set(key, value, timeout):
-        _set_l0(key, value)
-        cache.set(key, value, timeout)
-
     def decorator(func):
-        def _validate_type(cache_key, result):
-            if expected_type and not isinstance(result, expected_type):
-                data = {
-                    "function": f"{func.__module__}.{func.__qualname__}",
-                    "result": str(result)[:30],
-                    "expected_type": expected_type,
-                    "type": type(result),
-                    "key": cache_key,
-                }
-                log_debug("invalid_key", data)
-                return False
-            return True
-
         def wrapper(*args, **kwargs):
             cache_key = get_key(func, *args, **kwargs)
-            result = _get(cache_key)
+            result = cache.get(cache_key)
-            if result is not None and _validate_type(cache_key, result):
+            if result is not None:
-                _set_l0(cache_key, result)
-                if type(result) == str and result == NONE_RESULT:
-                    result = None
                 return result
+
             result = func(*args, **kwargs)
-            if result is None:
+            cache.set(cache_key, result, timeout)
-                cache_result = NONE_RESULT
-            else:
-                cache_result = result
-            _set(cache_key, cache_result, timeout)
             return result
 
         def dirty(*args, **kwargs):
             cache_key = get_key(func, *args, **kwargs)
             cache.delete(cache_key)
-            if l0_cache:
-                l0_cache.delete(cache_key)
-
-        def prefetch_multi(args_list):
-            keys = []
-            for args in args_list:
-                keys.append(get_key(func, *args))
-            results = cache.get_many(keys)
-            for key, result in results.items():
-                if result is not None:
-                    _set_l0(key, result)
-
-        def dirty_multi(args_list):
-            keys = []
-            for args in args_list:
-                keys.append(get_key(func, *args))
-            cache.delete_many(keys)
-            if l0_cache:
-                l0_cache.delete_many(keys)
 
         wrapper.dirty = dirty
-        wrapper.prefetch_multi = prefetch_multi
-        wrapper.dirty_multi = dirty_multi
 
         return wrapper
 

judge/comments.py

@@ -0,0 +1,243 @@
+from django import forms
+from django.conf import settings
+from django.contrib.auth.decorators import login_required
+from django.contrib.contenttypes.models import ContentType
+from django.core.exceptions import ValidationError
+from django.db.models import Count, FilteredRelation, Q
+from django.db.models.expressions import F, Value
+from django.db.models.functions import Coalesce
+from django.forms import ModelForm
+from django.http import (
+    HttpResponseForbidden,
+    HttpResponseNotFound,
+    HttpResponseRedirect,
+    Http404,
+)
+from django.urls import reverse_lazy
+from django.utils.decorators import method_decorator
+from django.utils.translation import gettext as _
+from django.views.generic import View
+from django.views.generic.base import TemplateResponseMixin
+from django.views.generic.detail import SingleObjectMixin
+from reversion import revisions
+from reversion.models import Revision, Version
+
+from judge.dblock import LockModel
+from judge.models import Comment, Notification
+from judge.widgets import HeavyPreviewPageDownWidget
+from judge.jinja2.reference import get_user_from_text
+
+
+def add_mention_notifications(comment):
+    user_referred = get_user_from_text(comment.body).exclude(id=comment.author.id)
+    for user in user_referred:
+        notification_ref = Notification(owner=user, comment=comment, category="Mention")
+        notification_ref.save()
+
+
+def del_mention_notifications(comment):
+    query = {"comment": comment, "category": "Mention"}
+    Notification.objects.filter(**query).delete()
+
+
+class CommentForm(ModelForm):
+    class Meta:
+        model = Comment
+        fields = ["body", "parent"]
+        widgets = {
+            "parent": forms.HiddenInput(),
+        }
+
+        if HeavyPreviewPageDownWidget is not None:
+            widgets["body"] = HeavyPreviewPageDownWidget(
+                preview=reverse_lazy("comment_preview"),
+                preview_timeout=1000,
+                hide_preview_button=True,
+            )
+
+    def __init__(self, request, *args, **kwargs):
+        self.request = request
+        super(CommentForm, self).__init__(*args, **kwargs)
+        self.fields["body"].widget.attrs.update({"placeholder": _("Comment body")})
+
+    def clean(self):
+        if self.request is not None and self.request.user.is_authenticated:
+            profile = self.request.profile
+            if profile.mute:
+                raise ValidationError(_("Your part is silent, little toad."))
+            elif (
+                not self.request.user.is_staff
+                and not profile.submission_set.filter(
+                    points=F("problem__points")
+                ).exists()
+            ):
+                raise ValidationError(
+                    _(
+                        "You need to have solved at least one problem "
+                        "before your voice can be heard."
+                    )
+                )
+        return super(CommentForm, self).clean()
+
+
+class CommentedDetailView(TemplateResponseMixin, SingleObjectMixin, View):
+    comment_page = None
+
+    def get_comment_page(self):
+        if self.comment_page is None:
+            raise NotImplementedError()
+        return self.comment_page
+
+    def is_comment_locked(self):
+        if self.request.user.has_perm("judge.override_comment_lock"):
+            return False
+        return (
+            self.request.in_contest
+            and self.request.participation.contest.use_clarifications
+        )
+
+    @method_decorator(login_required)
+    def post(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        if self.is_comment_locked():
+            return HttpResponseForbidden()
+
+        parent = request.POST.get("parent")
+        if parent:
+            try:
+                parent = int(parent)
+            except ValueError:
+                return HttpResponseNotFound()
+            else:
+                if not self.object.comments.filter(hidden=False, id=parent).exists():
+                    return HttpResponseNotFound()
+
+        form = CommentForm(request, request.POST)
+        if form.is_valid():
+            comment = form.save(commit=False)
+            comment.author = request.profile
+            comment.linked_object = self.object
+
+            with LockModel(
+                write=(Comment, Revision, Version), read=(ContentType,)
+            ), revisions.create_revision():
+                revisions.set_user(request.user)
+                revisions.set_comment(_("Posted comment"))
+                comment.save()
+
+            # add notification for reply
+            if comment.parent and comment.parent.author != comment.author:
+                notification_reply = Notification(
+                    owner=comment.parent.author, comment=comment, category="Reply"
+                )
+                notification_reply.save()
+
+            # add notification for page authors
+            page_authors = comment.linked_object.authors.all()
+            for user in page_authors:
+                if user == comment.author:
+                    continue
+                notification = Notification(
+                    owner=user, comment=comment, category="Comment"
+                )
+                notification.save()
+            # except Exception:
+            #     pass
+
+            add_mention_notifications(comment)
+
+            return HttpResponseRedirect(comment.get_absolute_url())
+
+        context = self.get_context_data(object=self.object, comment_form=form)
+        return self.render_to_response(context)
+
+    def get(self, request, *args, **kwargs):
+        pre_query = None
+        if "comment-id" in  request.GET:
+            comment_id = int(request.GET["comment-id"])
+            try:
+                comment_obj = Comment.objects.get(pk=comment_id)
+            except Comment.DoesNotExist:
+                raise Http404
+            pre_query = comment_obj
+            while comment_obj is not None:
+                pre_query = comment_obj
+                comment_obj = comment_obj.parent                        
+        self.object = self.get_object()
+        return self.render_to_response(
+            self.get_context_data(
+                object=self.object,
+                pre_query=pre_query,
+                comment_form=CommentForm(request, initial={"parent": None}),
+            )
+        )
+
+    def get_context_data(self, pre_query=None, **kwargs):
+        context = super(CommentedDetailView, self).get_context_data(**kwargs)
+        queryset = self.object.comments
+        queryset = queryset.filter(parent=None, hidden=False)
+        queryset_all = None
+        comment_count = len(queryset)
+        context["comment_remove"] = -1
+        if (pre_query != None):
+            comment_remove = pre_query.id
+            queryset_all = pre_query.get_descendants(include_self=True)
+            queryset_all = (
+                queryset_all.select_related("author__user")
+                .filter(hidden=False)
+                .defer("author__about")
+                .annotate(revisions=Count("versions", distinct=True))
+            )
+            context["comment_remove"] = comment_remove
+        else:
+            queryset = (
+                queryset.select_related("author__user")
+                .defer("author__about")
+                .filter(hidden=False)
+                .annotate(
+                    count_replies=Count("replies", distinct=True), 
+                    revisions=Count("versions", distinct=True),
+                )[:10]
+            )
+            
+        if self.request.user.is_authenticated:
+            profile = self.request.profile
+            if (pre_query != None):
+                queryset_all = queryset_all.annotate(
+                    my_vote=FilteredRelation(
+                        "votes", condition=Q(votes__voter_id=profile.id)
+                    ),
+                ).annotate(vote_score=Coalesce(F("my_vote__score"), Value(0)))
+            else:
+                queryset = queryset.annotate(
+                    my_vote=FilteredRelation(
+                        "votes", condition=Q(votes__voter_id=profile.id)
+                    ),
+                ).annotate(vote_score=Coalesce(F("my_vote__score"), Value(0)))
+            
+            context["is_new_user"] = (
+                not self.request.user.is_staff
+                and not profile.submission_set.filter(
+                    points=F("problem__points")
+                ).exists()
+            )
+        
+        context["has_comments"] = queryset.exists()
+        context["comment_lock"] = self.is_comment_locked()
+        context["comment_list"] = queryset
+        context["comment_all_list"] = queryset_all
+
+        context["vote_hide_threshold"] = settings.DMOJ_COMMENT_VOTE_HIDE_THRESHOLD
+        if queryset.exists():
+            context["comment_root_id"] = queryset[0].id
+        else: 
+            context["comment_root_id"] = 0
+        context["comment_parrent_none"] = 1
+        if (pre_query != None):
+            context["offset"] = 1
+        else:
+            context["offset"] = 10
+        
+        context["limit"] = 10
+        context["comment_count"] = comment_count
+        return context

judge/contest_format/__init__.py

@@ -4,5 +4,4 @@ from judge.contest_format.ecoo import ECOOContestFormat
 from judge.contest_format.icpc import ICPCContestFormat
 from judge.contest_format.ioi import IOIContestFormat
 from judge.contest_format.new_ioi import NewIOIContestFormat
-from judge.contest_format.ultimate import UltimateContestFormat
 from judge.contest_format.registry import choices, formats

judge/contest_format/base.py

@@ -109,8 +109,6 @@ class BaseContestFormat(metaclass=ABCMeta):
         )
         for result in queryset:
             problem = str(result["problem_id"])
-            if not (self.contest.freeze_after or hidden_subtasks.get(problem)):
-                continue
             if format_data.get(problem):
                 is_after_freeze = (
                     self.contest.freeze_after

judge/contest_format/ultimate.py

@@ -1,55 +0,0 @@
-from django.utils.translation import gettext_lazy
-
-from judge.contest_format.ioi import IOIContestFormat
-from judge.contest_format.registry import register_contest_format
-from django.db.models import Min, OuterRef, Subquery
-
-# This contest format only counts last submission for each problem.
-
-
-@register_contest_format("ultimate")
-class UltimateContestFormat(IOIContestFormat):
-    name = gettext_lazy("Ultimate")
-
-    def update_participation(self, participation):
-        cumtime = 0
-        score = 0
-        format_data = {}
-
-        queryset = participation.submissions
-        if self.contest.freeze_after:
-            queryset = queryset.filter(
-                submission__date__lt=participation.start + self.contest.freeze_after
-            )
-
-        queryset = (
-            queryset.values("problem_id")
-            .filter(
-                id=Subquery(
-                    queryset.filter(problem_id=OuterRef("problem_id"))
-                    .order_by("-id")
-                    .values("id")[:1]
-                )
-            )
-            .values_list("problem_id", "submission__date", "points")
-        )
-
-        for problem_id, time, points in queryset:
-            if self.config["cumtime"]:
-                dt = (time - participation.start).total_seconds()
-                if points:
-                    cumtime += dt
-            else:
-                dt = 0
-            format_data[str(problem_id)] = {
-                "time": dt,
-                "points": points,
-            }
-            score += points
-
-        self.handle_frozen_state(participation, format_data)
-        participation.cumtime = max(cumtime, 0)
-        participation.score = round(score, self.contest.points_precision)
-        participation.tiebreaker = 0
-        participation.format_data = format_data
-        participation.save()

judge/custom_translations.py

@@ -1,22 +0,0 @@
-from django.utils.translation import gettext_lazy as _, ngettext
-
-
-def custom_trans():
-    return [
-        # Password reset
-        ngettext(
-            "This password is too short. It must contain at least %(min_length)d character.",
-            "This password is too short. It must contain at least %(min_length)d characters.",
-            0,
-        ),
-        ngettext(
-            "Your password must contain at least %(min_length)d character.",
-            "Your password must contain at least %(min_length)d characters.",
-            0,
-        ),
-        _("The two password fields didn’t match."),
-        _("Your password can’t be entirely numeric."),
-        # Navbar
-        _("Bug Report"),
-        _("Courses"),
-    ]

judge/event_poster_amqp.py

@@ -16,7 +16,7 @@ class EventPoster(object):
 
     def _connect(self):
         self._conn = pika.BlockingConnection(
-            pika.URLParameters(settings.EVENT_DAEMON_AMQP),
+            pika.URLParameters(settings.EVENT_DAEMON_AMQP)
         )
         self._chan = self._conn.channel()
 
@@ -25,7 +25,7 @@ class EventPoster(object):
             id = int(time() * 1000000)
             self._chan.basic_publish(
                 self._exchange,
-                "#",
+                "",
                 json.dumps({"id": id, "channel": channel, "message": message}),
             )
             return id

judge/feed.py

@@ -0,0 +1,120 @@
+from django.conf import settings
+from django.contrib.auth.models import AnonymousUser
+from django.contrib.syndication.views import Feed
+from django.core.cache import cache
+from django.utils import timezone
+from django.utils.feedgenerator import Atom1Feed
+
+from judge.jinja2.markdown import markdown
+from judge.models import BlogPost, Comment, Problem
+
+import re
+
+
+# https://lsimons.wordpress.com/2011/03/17/stripping-illegal-characters-out-of-xml-in-python/
+def escape_xml_illegal_chars(val, replacement="?"):
+    _illegal_xml_chars_RE = re.compile(
+        "[\x00-\x08\x0b\x0c\x0e-\x1F\uD800-\uDFFF\uFFFE\uFFFF]"
+    )
+    return _illegal_xml_chars_RE.sub(replacement, val)
+
+
+class ProblemFeed(Feed):
+    title = "Recently Added %s Problems" % settings.SITE_NAME
+    link = "/"
+    description = (
+        "The latest problems added on the %s website" % settings.SITE_LONG_NAME
+    )
+
+    def items(self):
+        return (
+            Problem.objects.filter(is_public=True, is_organization_private=False)
+            .defer("description")
+            .order_by("-date", "-id")[:25]
+        )
+
+    def item_title(self, problem):
+        return problem.name
+
+    def item_description(self, problem):
+        key = "problem_feed:%d" % problem.id
+        desc = cache.get(key)
+        if desc is None:
+            desc = str(markdown(problem.description))[:500] + "..."
+            desc = escape_xml_illegal_chars(desc)
+            cache.set(key, desc, 86400)
+        return desc
+
+    def item_pubdate(self, problem):
+        return problem.date
+
+    item_updateddate = item_pubdate
+
+
+class AtomProblemFeed(ProblemFeed):
+    feed_type = Atom1Feed
+    subtitle = ProblemFeed.description
+
+
+class CommentFeed(Feed):
+    title = "Latest %s Comments" % settings.SITE_NAME
+    link = "/"
+    description = "The latest comments on the %s website" % settings.SITE_LONG_NAME
+
+    def items(self):
+        return Comment.most_recent(AnonymousUser(), 25)
+
+    def item_title(self, comment):
+        return "%s -> %s" % (comment.author.user.username, comment.page_title)
+
+    def item_description(self, comment):
+        key = "comment_feed:%d" % comment.id
+        desc = cache.get(key)
+        if desc is None:
+            desc = str(markdown(comment.body))
+            desc = escape_xml_illegal_chars(desc)
+            cache.set(key, desc, 86400)
+        return desc
+
+    def item_pubdate(self, comment):
+        return comment.time
+
+    item_updateddate = item_pubdate
+
+
+class AtomCommentFeed(CommentFeed):
+    feed_type = Atom1Feed
+    subtitle = CommentFeed.description
+
+
+class BlogFeed(Feed):
+    title = "Latest %s Blog Posts" % settings.SITE_NAME
+    link = "/"
+    description = "The latest blog posts from the %s" % settings.SITE_LONG_NAME
+
+    def items(self):
+        return BlogPost.objects.filter(
+            visible=True, publish_on__lte=timezone.now()
+        ).order_by("-sticky", "-publish_on")
+
+    def item_title(self, post):
+        return post.title
+
+    def item_description(self, post):
+        key = "blog_feed:%d" % post.id
+        summary = cache.get(key)
+        if summary is None:
+            summary = str(markdown(post.summary or post.content))
+            summary = escape_xml_illegal_chars(summary)
+            cache.set(key, summary, 86400)
+        return summary
+
+    def item_pubdate(self, post):
+        return post.publish_on
+
+    item_updateddate = item_pubdate
+
+
+class AtomBlogFeed(BlogFeed):
+    feed_type = Atom1Feed
+    subtitle = BlogFeed.description

judge/fixtures/demo.json

@@ -8,6 +8,7 @@
             "ip": "10.0.2.2",
             "language": 1,
             "last_access": "2017-12-02T08:57:10.093Z",
+            "math_engine": "auto",
             "mute": false,
             "organizations": [
                 1
@@ -17,7 +18,8 @@
             "problem_count": 0,
             "rating": null,
             "timezone": "America/Toronto",
-            "user": 1
+            "user": 1,
+            "user_script": ""
         },
         "model": "judge.profile",
         "pk": 1

judge/forms.py

@@ -11,6 +11,7 @@ from django.contrib.auth.models import User
 from django.contrib.auth.forms import AuthenticationForm
 from django.core.exceptions import ValidationError, ObjectDoesNotExist
 from django.core.validators import RegexValidator
+from django.db import transaction
 from django.db.models import Q
 from django.forms import (
     CharField,
@@ -29,7 +30,6 @@ from django_ace import AceWidget
 from judge.models import (
     Contest,
     Language,
-    TestFormatterModel,
     Organization,
     PrivateMessage,
     Problem,
@@ -38,12 +38,11 @@ from judge.models import (
     Submission,
     BlogPost,
     ContestProblem,
-    TestFormatterModel,
-    ProfileInfo,
 )
 
 from judge.widgets import (
     HeavyPreviewPageDownWidget,
+    MathJaxPagedownWidget,
     PagedownWidget,
     Select2MultipleWidget,
     Select2Widget,
@@ -51,9 +50,8 @@ from judge.widgets import (
     HeavySelect2Widget,
     Select2MultipleWidget,
     DateTimePickerWidget,
-    ImageWidget,
-    DatePickerWidget,
 )
+from judge.tasks import rescore_contest
 
 
 def fix_unicode(string, unsafe=tuple("\u202a\u202b\u202d\u202e")):
@@ -71,61 +69,61 @@ class UserForm(ModelForm):
         ]
 
 
-class ProfileInfoForm(ModelForm):
-    class Meta:
-        model = ProfileInfo
-        fields = ["tshirt_size", "date_of_birth", "address"]
-        widgets = {
-            "tshirt_size": Select2Widget(attrs={"style": "width:100%"}),
-            "date_of_birth": DatePickerWidget,
-            "address": forms.TextInput(attrs={"style": "width:100%"}),
-        }
-
-
 class ProfileForm(ModelForm):
     class Meta:
         model = Profile
         fields = [
             "about",
+            "organizations",
             "timezone",
             "language",
             "ace_theme",
-            "profile_image",
+            "user_script",
-            "css_background",
         ]
         widgets = {
+            "user_script": AceWidget(theme="github"),
             "timezone": Select2Widget(attrs={"style": "width:200px"}),
             "language": Select2Widget(attrs={"style": "width:200px"}),
             "ace_theme": Select2Widget(attrs={"style": "width:200px"}),
-            "profile_image": ImageWidget,
-            "css_background": forms.TextInput(),
         }
 
+        has_math_config = bool(settings.MATHOID_URL)
+        if has_math_config:
+            fields.append("math_engine")
+            widgets["math_engine"] = Select2Widget(attrs={"style": "width:200px"})
+
         if HeavyPreviewPageDownWidget is not None:
             widgets["about"] = HeavyPreviewPageDownWidget(
                 preview=reverse_lazy("profile_preview"),
                 attrs={"style": "max-width:700px;min-width:700px;width:700px"},
             )
 
+    def clean(self):
+        organizations = self.cleaned_data.get("organizations") or []
+        max_orgs = settings.DMOJ_USER_MAX_ORGANIZATION_COUNT
+
+        if sum(org.is_open for org in organizations) > max_orgs:
+            raise ValidationError(
+                _("You may not be part of more than {count} public groups.").format(
+                    count=max_orgs
+                )
+            )
+
+        return self.cleaned_data
+
     def __init__(self, *args, **kwargs):
         user = kwargs.pop("user", None)
         super(ProfileForm, self).__init__(*args, **kwargs)
-        self.fields["profile_image"].required = False
+        if not user.has_perm("judge.edit_all_organization"):
-
+            self.fields["organizations"].queryset = Organization.objects.filter(
-    def clean_profile_image(self):
+                Q(is_open=True) | Q(id__in=user.profile.organizations.all()),
-        profile_image = self.cleaned_data.get("profile_image")
-        if profile_image:
-            if profile_image.size > 5 * 1024 * 1024:
-                raise ValidationError(
-                    _("File size exceeds the maximum allowed limit of 5MB.")
             )
-        return profile_image
 
 
 def file_size_validator(file):
-    limit = 10 * 1024 * 1024
+    limit = 1 * 1024 * 1024
     if file.size > limit:
-        raise ValidationError("File too large. Size should not exceed 10MB.")
+        raise ValidationError("File too large. Size should not exceed 1MB.")
 
 
 class ProblemSubmitForm(ModelForm):
@@ -195,32 +193,16 @@ class EditOrganizationForm(ModelForm):
             "slug",
             "short_name",
             "about",
-            "organization_image",
+            "logo_override_image",
             "admins",
             "is_open",
         ]
-        widgets = {
+        widgets = {"admins": Select2MultipleWidget()}
-            "admins": Select2MultipleWidget(),
-            "organization_image": ImageWidget,
-        }
         if HeavyPreviewPageDownWidget is not None:
             widgets["about"] = HeavyPreviewPageDownWidget(
                 preview=reverse_lazy("organization_preview")
             )
 
-    def __init__(self, *args, **kwargs):
-        super(EditOrganizationForm, self).__init__(*args, **kwargs)
-        self.fields["organization_image"].required = False
-
-    def clean_organization_image(self):
-        organization_image = self.cleaned_data.get("organization_image")
-        if organization_image:
-            if organization_image.size > 5 * 1024 * 1024:
-                raise ValidationError(
-                    _("File size exceeds the maximum allowed limit of 5MB.")
-                )
-        return organization_image
-
 
 class AddOrganizationForm(ModelForm):
     class Meta:
@@ -230,7 +212,7 @@ class AddOrganizationForm(ModelForm):
             "slug",
             "short_name",
             "about",
-            "organization_image",
+            "logo_override_image",
             "is_open",
         ]
         widgets = {}
@@ -242,7 +224,6 @@ class AddOrganizationForm(ModelForm):
     def __init__(self, *args, **kwargs):
         self.request = kwargs.pop("request", None)
         super(AddOrganizationForm, self).__init__(*args, **kwargs)
-        self.fields["organization_image"].required = False
 
     def save(self, commit=True):
         res = super(AddOrganizationForm, self).save(commit=False)
@@ -304,9 +285,16 @@ class EditOrganizationContestForm(ModelForm):
             "view_contest_scoreboard",
         ]:
             self.fields[field].widget.data_url = (
-                self.fields[field].widget.get_url() + f"?org_id={self.org_id}"
+                self.fields[field].widget.get_url() + "?org_id=1"
             )
 
+    def save(self, commit=True):
+        res = super(EditOrganizationContestForm, self).save(commit=False)
+        if commit:
+            res.save()
+            transaction.on_commit(rescore_contest.s(res.key).delay)
+        return res
+
     class Meta:
         model = Contest
         fields = (
@@ -323,10 +311,9 @@ class EditOrganizationContestForm(ModelForm):
             "freeze_after",
             "use_clarifications",
             "hide_problem_tags",
-            "public_scoreboard",
             "scoreboard_visibility",
+            "run_pretests_only",
             "points_precision",
-            "rate_limit",
             "description",
             "og_image",
             "logo_override_image",
@@ -369,7 +356,7 @@ class AddOrganizationMemberForm(ModelForm):
         label=_("New users"),
     )
 
-    def clean_new_users(self):
+    def clean(self):
         new_users = self.cleaned_data.get("new_users") or ""
         usernames = new_users.split()
         invalid_usernames = []
@@ -387,7 +374,8 @@ class AddOrganizationMemberForm(ModelForm):
                     usernames=str(invalid_usernames)
                 )
             )
-        return valid_usernames
+        self.cleaned_data["new_users"] = valid_usernames
+        return self.cleaned_data
 
     class Meta:
         model = Organization
@@ -435,15 +423,13 @@ class NewMessageForm(ModelForm):
         fields = ["title", "content"]
         widgets = {}
         if PagedownWidget is not None:
-            widgets["content"] = PagedownWidget()
+            widgets["content"] = MathJaxPagedownWidget()
 
 
 class CustomAuthenticationForm(AuthenticationForm):
     def __init__(self, *args, **kwargs):
         super(CustomAuthenticationForm, self).__init__(*args, **kwargs)
-        self.fields["username"].widget.attrs.update(
+        self.fields["username"].widget.attrs.update({"placeholder": _("Username")})
-            {"placeholder": _("Username/Email")}
-        )
         self.fields["password"].widget.attrs.update({"placeholder": _("Password")})
 
         self.has_google_auth = self._has_social_auth("GOOGLE_OAUTH2")
@@ -506,15 +492,6 @@ class ContestCloneForm(Form):
         max_length=20,
         validators=[RegexValidator("^[a-z0-9]+$", _("Contest id must be ^[a-z0-9]+$"))],
     )
-    organization = ChoiceField(choices=(), required=True)
-
-    def __init__(self, *args, org_choices=(), profile=None, **kwargs):
-        super(ContestCloneForm, self).__init__(*args, **kwargs)
-        self.fields["organization"].widget = Select2Widget(
-            attrs={"style": "width: 100%", "data-placeholder": _("Group")},
-        )
-        self.fields["organization"].choices = org_choices
-        self.profile = profile
 
     def clean_key(self):
         key = self.cleaned_data["key"]
@@ -522,16 +499,6 @@ class ContestCloneForm(Form):
             raise ValidationError(_("Contest with key already exists."))
         return key
 
-    def clean_organization(self):
-        organization_id = self.cleaned_data["organization"]
-        try:
-            organization = Organization.objects.get(id=organization_id)
-        except Exception:
-            raise ValidationError(_("Group doesn't exist."))
-        if not organization.admins.filter(id=self.profile.id).exists():
-            raise ValidationError(_("You don't have permission in this group."))
-        return organization
-
 
 class ProblemPointsVoteForm(ModelForm):
     class Meta:
@@ -547,7 +514,7 @@ class ContestProblemForm(ModelForm):
             "problem",
             "points",
             "partial",
-            "show_testcases",
+            "output_prefix_override",
             "max_submissions",
         )
         widgets = {
@@ -557,43 +524,9 @@ class ContestProblemForm(ModelForm):
         }
 
 
-class ContestProblemModelFormSet(BaseModelFormSet):
-    def is_valid(self):
-        valid = super().is_valid()
-
-        if not valid:
-            return valid
-
-        problems = set()
-        duplicates = []
-
-        for form in self.forms:
-            if form.cleaned_data and not form.cleaned_data.get("DELETE", False):
-                problem = form.cleaned_data.get("problem")
-                if problem in problems:
-                    duplicates.append(problem)
-                else:
-                    problems.add(problem)
-
-        if duplicates:
-            for form in self.forms:
-                problem = form.cleaned_data.get("problem")
-                if problem in duplicates:
-                    form.add_error("problem", _("This problem is duplicated."))
-            return False
-
-        return True
-
-
 class ContestProblemFormSet(
     formset_factory(
-        ContestProblemForm, formset=ContestProblemModelFormSet, extra=6, can_delete=True
+        ContestProblemForm, formset=BaseModelFormSet, extra=6, can_delete=True
     )
 ):
     model = ContestProblem
-
-
-class TestFormatterForm(ModelForm):
-    class Meta:
-        model = TestFormatterModel
-        fields = ["file"]

judge/highlight_code.py

@@ -1,13 +1,44 @@
 from django.utils.html import escape, mark_safe
-from judge.markdown import markdown
 
 __all__ = ["highlight_code"]
 
 
-def highlight_code(code, language, linenos=True, title=None):
+def _make_pre_code(code):
-    linenos_option = 'linenums="1"' if linenos else ""
+    return mark_safe("<pre>" + escape(code) + "</pre>")
-    title_option = f'title="{title}"' if title else ""
-    options = f"{{.{language} {linenos_option} {title_option}}}"
 
-    value = f"```{options}\n{code}\n```\n"
+
-    return mark_safe(markdown(value))
+try:
+    import pygments
+    import pygments.lexers
+    import pygments.formatters
+    import pygments.util
+except ImportError:
+
+    def highlight_code(code, language, cssclass=None):
+        return _make_pre_code(code)
+
+else:
+
+    def highlight_code(code, language, cssclass="codehilite", linenos=True):
+        try:
+            lexer = pygments.lexers.get_lexer_by_name(language)
+        except pygments.util.ClassNotFound:
+            return _make_pre_code(code)
+
+        if linenos:
+            return mark_safe(
+                pygments.highlight(
+                    code,
+                    lexer,
+                    pygments.formatters.HtmlFormatter(
+                        cssclass=cssclass, linenos="table", wrapcode=True
+                    ),
+                )
+            )
+        return mark_safe(
+            pygments.highlight(
+                code,
+                lexer,
+                pygments.formatters.HtmlFormatter(cssclass=cssclass, wrapcode=True),
+            )
+        )

judge/jinja2/__init__.py

@@ -21,8 +21,8 @@ from . import (
     render,
     social,
     spaceless,
+    submission,
     timedelta,
-    comment,
 )
 from . import registry